Predator 670 white smoke

Something is wrong if you see lawn mower is blowing smoke — but relax. It probably isn't serious. If there is blue or white smoke, it's an indication that oil is being burnt along with the fuel.

It may have gotten into the crankcase or onto the engine for a number of simple reasons.

predator 670 white smoke

When you see black smoke, it usually means the mower has too much fuel and not enough air. Lawn mower smoke usually doesn't indicate a serious problem, but if it doesn't go away on its own — or it's accompanied by an engine malfunction — you may need a lawn mower repair. A lawn mower engine will puff out black smoke when the fuel and air mixture is too rich. Because there isn't enough air, combustion is incomplete, and the unburnt fuel in the combustion chamber turns to smoke.

You see the same phenomenon when you burn leaves and pack them too tightly to allow air to circulate. The most common cause of black smoke in a lawn mower is a dirty air filter, and that's easy to fix.

Just remove the filter and clean it with soap and water, or replace it with a new one. If there is still lawn mower smoke, you may have to adjust the carburetor to make a leaner fuel mixture. This is usually just a matter of turning a screw, but you'll have to consult the owner's manual for your lawn mower to find which one. It can be disturbing to see a cloud of white smoke coming from your lawn mower.

But if you let it run, the lawn mower smoke will usually stop. It's a sign that the engine is burning oil, but the oil probably got in there for an innocuous reason.

You may have spilled some on the housing when you serviced the mower, or you may have overfilled the crankcase. It's also possible that oil got into the combustion chamber when you turned the mower over to clean the blades. Even mowing on a hill can cause oil to spill into the combustion chamber.

What does White Smoke from the Car Exhaust Mean?

If you're using a two-stroke mower, you may have added too much oil to the gas. The normal proportion is usually between 50 to 1 and 40 to 1. The excess oil won't hurt the engine, but if you want the smoke to stop, you'll have to change the fuel. Sometimes a new mower will emit white smoke when you start it for the first time. That's usually the result of oil residues left by the manufacturer.

You don't need a lawn mower repair — just let the mower run. The engine will burn off the residue and the smoke should stop. An excess of blue or white smoke could mean that oil has a pathway into the combustion chamber through worn seals.

If this is what's happening, the mower won't stop smoking, and the engine may sputter or stop.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. It only takes a minute to sign up. I recently purchased a 9 kilowatt generator running on a 17hp Briggs and Stratton engine which ran pretty well when I first bought it except for a little white smoke.

I replaced the gasoline just to be safe as the owner had not run the generator for several years.

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The generator ran great after changing the gasoline. I don't remember seeing any white smoke either. Then I replaced the oil and put cleaner in the carburetor or what I thought was the carburetor. What I actually shot with carburetor cleaner was the fuel pump! After this, the generator would only turn on for at most 20 seconds then a ton of white smoke would shoot out and the generator would quickly die after that.

Come to find out that a bunch of gas was spilling over into the oil section and I assume oil was also feeding back into the cylinder. I then replaced the fuel pump, carburetor float and needle valve. I also replaced the gasoline-filled oil.

predator 670 white smoke

Now the generator runs beautiful, except that now there is a steadily increasing amount of white smoke coming from the exhaust.

It takes about 10 seconds for any white smoke to be visible and steadily more and more white smoke is visible until it looks like a fog machine by about 90 seconds. Once I turn off the engine, white smoke continues to steam from the exhaust for about another two minutes, steadily decreasing.

There is no oil that I can see around the crankshaft or the gasket. The oil level is staying at the exact spot and is not too full. From what it smells like, I believe that oil is burning, but I do not have the experience to tell where it could be coming from. Anyone have any ideas of what could be causing the smoke? My guesses without more information would include the crankcase being overfilled with oil, a blown head gasket, or damage to the piston, rings or cylinders.

I doubt that you have the generator running while it sits at an angle, which could let oil slop over into the carburetor float bowl. Although that's a possibility, too, if you have it sitting on a slope. Since the engine apparently always produced a little while smoke, and since the smoke doesn't start for a while, then doesn't stop for a while after shutting the engine off, it's probably heat-related in one way or another.

As the engine heats up, it expands. If there's a damaged head gasket or something like a hairline crack in a cylinder wall, it could open up just enough to let oil seep through once the engine is hot.

Or if you have something like damaged or ill-fitting piston rings, oil might start squeezing past the rings once the engine heats up and the cylinder expands. You mentioned that if you hold your hand in the white exhaust, little oil droplets condense on your hand. If the exhaust valve is open at all after the engine shuts off, any oil in the cylinder will burn off and push white smoke out the exhaust, as well. Especially if it's some kind of hairline crack letting oil into the cylinder, which then closes back up as the engine cools.

Of those possibilities, aside from overfill or running the engine on a slope, the head gasket would be the easiest thing for you to fix yourself. You would need a torque wrench and specifications on the correct bolt tightening pattern and torque for the head bolts for your specific engine. Here's a potentially handy page from Briggs and Stratton, but it might be time to call a local small engine repair shop.

I ran across this thread while researching my problem, so I thought I would share my experience and my stupidity for others to learn. My fuel pump was leaking gas last summer, so I replaced it with the Briggs part. It started leaking gas again this fall, so this time I used an aftermarket part from Oregon.

I installed the pump, and the engine started up just fine but then I started noticing white smoke. I shut the engine off and got a huge backfire repeated this 2 more times and it backfired each time. I then parked it and let it run for 10 minutes but the white smoke started getting bad.

I turned on the blades and a huge puff of white smoke came out. Then the motor died and wouldn't restart.Smoke blows from the exhaust if the engine is overfilled with oil. Place the pressure washer on a level surface and check the oil level using the dipstick. If the engine is overfilled with oil, drain oil to within the proper range.

Check the engine choke for the proper setting. A choke that won't open causes excessive smoke. Check your carburetor system and rebuild or replace the carburetor if necessary.

Predator 670 bogging down and smoke

Tune up the pressure washer engine to help eliminate exhaust smoke. A tune-up includes changing the oil, checking the ignition system and adjusting the throttle and choke controls. Rebuild kits are available for most carburetors.

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The kit contains essential components such as jets, pins, seals and gaskets for overhauling the carburetor. You can sometimes fix a fuel supply problem by disassembling, cleaning and rebuilding the carburetor. Replace the carburetor if it's severely clogged with varnish or if the orifices are clogged with debris and can't be cleared using carburetor cleaner and compressed air.

A tune-up restores the pressure washer's engine to its peak operating condition. A tune-up includes changing the oil, cleaning the engine, replacing the air filter, checking the ignition system, inspecting the carburetor, adjusting the throttle and choke controls, and adjusting and lubricating all moving parts.

The unloader valve recirculates water to protect the pump from damage. If the unloader valve is defective, replace it using the steps in this repair guide. Air in the inlet water supply can damage the check valves. The pump can be damaged by air in the inlet water supply or by chemicals that remain in the pump body after using the chemical injection system.

Follow these steps to replace a damaged pump. Use the advice and tips in these articles and videos to get the most out of your pressure washer. Spray tips vary in pressure and angle of spray. This guide matches the spray tip to the cleaning job. Gas Pressure Washer: Smoke coming out of the engine exhaust Smoke blows from the exhaust if the engine is overfilled with oil.

These repairs may help solve your gas pressure washer problem. Clean and rebuild the pressure washer carburetor. Replace the pressure washer carburetor. Tune up the pressure washer engine.

Symptoms for gas pressure washers. Choose a symptom to see related pressure washer repairs. View all. Water sprays out of the pressure relief valve.

Read more. Pressure washer won't mix detergent with spray. Sprays too hard.This is one of the common complaints we see at the small engine shop in the Spring.

This year I take it out and I start it up and after a couple of minutes it starts blowing white smoke very heavily.

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Are my rings shot? Generally billowing clouds of white smoke are from one of two things. Either the crankcase breather has failed or the oil is contaminated. The crankcase breather vents the gases and excess pressure from the crankcase and sends them through the carburetor to be burnt in the combustion process. Some breathers are nothing more than a reed valve that opens and closes as the pressure changes inside the crankcase from the piston's movement. If this reed breaks, bends or otherwise fails, then excess oil is pulled into the carburetor and the result is a lot of smoke.

Other breathers are screen or filter type and when they become too fouled or broken down to function, same result, lots of smoke. Since oil is being fed directly into the cylinder, the plug will foul very quickly and probably also affect engine performance. Breathers can fail at any time, often they will fail over the winter as the oil that's built up on and around them solidifies and just generally plugs things up. Repair is a pretty simple matter on many engines, just replace the breather.

You can try turning the reed around on the reed type breathers, but personally I just replace them. Sometimes all they need is a cleaning though, so give that a try.

Most breathers will run from just a couple dollars for reeds to maybe twenty dollars although a few that are incorporated into the valve cover may be upwards of thirty dollars. Reeds and complete breathers are available from most small engine shops for most engines. To replace a breather, follow the tube or hose from the back of the carburetor or air filter assembly to where the breather is mounted on the crankcase.

Most are simply attached with two screws but may be under the flywheel requiring flywheel removal. If it's incorporated into the valve cover, just replace the valve cover. Some are cartridges that plug into the valve cover, very easy to replace.

The other common cause for heavy white smoke, especially in mid-size Briggs and Stratton and Kohler engines, hp is from contaminated oil.

predator 670 white smoke

The most common contaminant will be gasoline that has leaked from the carburetor. We have had at least one engine that had a crankcase full of water, this was probably a case of sabotage from an irate neighbor. The diagnosis is simply to examine the oil.

It should have little to no smell of gasoline and should not be overly thin or muddy brown, gray, white or chunky like spoiled milk. Do not under any circumstance attempt to start an engine with oil that fits any of these criteria.


The most common cause of mid-size Briggs and Kohler engine catastrophic failure we see in the shop is from gasoline diluted oil causing the rod to overheat and break just above the crank journal. Gas will get into the crankcase when you have a carburetor that is leaking past the needle. This leak is generally caused by either a float problem or other problem keeping the needle and seat from sealing. If there is gas in the crankcase, then the recourse is a carburetor rebuild or replacement followed by an oil change.

The reason that this is such a common Spring problem is that if you leave any gas in the carburetor, it will evaporate and leave behind a varnish coating that can prevent the float assembly from functioning. Also, and even more common, the ethanol in today's fuels will ruin needles and seats, preventing them from sealing the flow of fuel off, which causes the carburetor to overflow and leak into the crankcase.A hydrothermal vent is a fissure on the seafloor from which geothermally heated water issues.

Hydrothermal vents are commonly found near volcanically active places, areas where tectonic plates are moving apart at spreading centersocean basins, and hotspots. Hydrothermal vents exist because the earth is both geologically active and has large amounts of water on its surface and within its crust. Under the sea, hydrothermal vents may form features called black smokers or white smokers. Relative to the majority of the deep sea, the areas around submarine hydrothermal vents are biologically more productive, often hosting complex communities fueled by the chemicals dissolved in the vent fluids.

Chemosynthetic bacteria and archaea form the base of the food chainsupporting diverse organisms, including giant tube wormsclamslimpets and shrimp.

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Active hydrothermal vents are thought to exist on Jupiter 's moon Europaand Saturn 's moon Enceladus[2] [3] and it is speculated that ancient hydrothermal vents once existed on Mars. Hydrothermal vents in the deep ocean typically form along the mid-ocean ridgessuch as the East Pacific Rise and the Mid-Atlantic Ridge.

These are locations where two tectonic plates are diverging and new crust is being formed. The water that issues from seafloor hydrothermal vents consists mostly of sea water drawn into the hydrothermal system close to the volcanic edifice through faults and porous sediments or volcanic strata, plus some magmatic water released by the upwelling magma.

The proportion of each varies from location to location. However, introducing salinity into the fluid raises the critical point to higher temperatures and pressures.

The critical point of seawater 3. Accordingly, if a hydrothermal fluid with a salinity of 3. Furthermore, the salinity of vent fluids have been shown to vary widely due to phase separation in the crust. For example, a vent fluid with a 2. Thus, water emerging from the hottest parts of some hydrothermal vents can be a supercritical fluidpossessing physical properties between those of a gas and those of a liquid.

Examples of supercritical venting are found at several sites. Although supercritical conditions have been observed at several sites, it is not yet known what significance, if any, supercritical venting has in terms of hydrothermal circulation, mineral deposit formation, geochemical fluxes or biological activity.

The initial stages of a vent chimney begin with the deposition of the mineral anhydrite. Sulfides of copperironand zinc then precipitate in the chimney gaps, making it less porous over the course of time. Some hydrothermal vents form roughly cylindrical chimney structures. These form from minerals that are dissolved in the vent fluid. When the superheated water contacts the near-freezing sea water, the minerals precipitate out to form particles which add to the height of the stacks.

A black smoker or deep sea vent is a type of hydrothermal vent found on the seabedtypically in the bathyal zone with largest frequency in depths from m to mbut also in lesser depths as well as deeper in abyssal zone. Black smokers typically emit particles with high levels of sulfur-bearing minerals, or sulfides.

When it comes in contact with cold ocean water, many minerals precipitate, forming a black, chimney-like structure around each vent. The deposited metal sulfides can become massive sulfide ore deposits in time. These black smokers are of interest as they are in a more stable area of the Earth's crust, where tectonic forces are less and consequently fields of hydrothermal vents are less common.

White smoker vents emit lighter-hued minerals, such as those containing barium, calcium and silicon. These vents also tend to have lower-temperature plumes probably because they are generally distant from their heat source.

Black and white smokers may coexist in the same hydrothermal field, but they generally represent proximal and distal vents to the main upflow zone, respectively. However, white smokers correspond mostly to waning stages of such hydrothermal fields, as magmatic heat sources become progressively more distant from the source due to magma crystallization and hydrothermal fluids become dominated by seawater instead of magmatic water.

Mineralizing fluids from this type of vents are rich in calcium and they form dominantly sulfate-rich i. Life has traditionally been seen as driven by energy from the sun, but deep-sea organisms have no access to sunlight, so biological communities around hydrothermal vents must depend on nutrients found in the dusty chemical deposits and hydrothermal fluids in which they live. Previously, benthic oceanographers assumed that vent organisms were dependent on marine snowas deep-sea organisms are.

This would leave them dependent on plant life and thus the sun. Some hydrothermal vent organisms do consume this "rain", but with only such a system, life forms would be sparse. Compared to the surrounding sea floor, however, hydrothermal vent zones have a density of organisms 10, totimes greater.Designed by SurfaceThemes. Simplex Servi-Cycle. Welcome, Guest. Please login or register. Home Help Search Login Register.

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I would like to adjust the idle mixture but no screw is visable and was wondering if that's where it's located and if it can be removed, and how? Thanks if anyone can help. I can't make out the plug. Goes aroundComes around. Member Posts: The "manual" is pretty generic and just hits the general maintenance.

Looks like the air bleed is factory set and sealed. May end up going to a bigger one and stronger valve springs along with it for higher RPM's now that the governor is out. I made a new intake manifold for carb to run a free flow air filter and get rid of the outboard motor looking airbox.

Just cant decide if I want to vent valve cover vent tube to intake, or just put a filter on it. Probably just filter it and let it vent.

Will post pics as it progress's. Quote from: carryall on June 12,AM. I believe the high speed jets are a 70 stock and some of the racing websites say they've had best luck going to 80 up to a 90 depending on if you've opened up the exhaust, 16lb valve springs, timing advance woodruff key, better flywheel, smaller fan, etc I found some 1" pipe in our shop today for the exhaust, but have to wait till motor is "in" to figure out what I'm going to do. I'm thinking a "fishtail tip" would look retro on it tho.

I ran mine with a tailpipe about 24 inches without a muffler and it was LOUD! I welded a muffler on and it is much more pleasant now. Wish I had the skill and equipment to produce such a piece.In the ag tractor collecting world, I have always Yikes, it must be more expensive out your way!

That stuff is a lot cheaper in my neck of the woods. I'd be doing the same given the price difference. The only thing interesting about this pile, is that the loader was mechanical self leveling originally, but some dumbass welded it solid.

Look on the deck, hopefully the ID tag is still on it, get the model Remember Me? What Fits? Results 1 to 8 of 8. Thread Tools Show Printable Version. Predator Low Speed Idle Adjust For all you Predator owners here is what you can do to adjust the low speed jets on the carb.

Everyone complains of how they're set to lean and the engine needs to be choked to start and to run. Mine just never idled smoothly at all! The carb low speed jets are sealed EPA so its not obvious they are present and adjustable. This is a 5 minute job so no reason to put this off. The attached PDF shows how to get at the adjustment needles.

It may need more fine tuning as I run it more. The caps are just a thin metal plug. I used a dremel cut off wheel to cut through the center and then a small screw driver to pry out. Predator Idle Jets. Sponsored Links Remove Advertisements. Before this idle adjustment I would need full choke and half throttle then 5 seconds to turn over the engine before it started.

Now no choke, no throttle and instant on when I turn the key! Its also running super smooth. Originally Posted by danthepqctman.

For all you Predator owners here is what you can do to adjust the low speed jets on the carb. Good point! I'll add after a day of sitting with the new adjustment it did take a few cranks to fire no choke. So I'll assume that's a fuel pump issue. After that it fires instantly on restart. Please repost picture of jet locations please. Picture was lost above.

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