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I have a Mitsubishi 4G64 engine fuel injected that's constantly flooding and blowing clouds of smoke compression reading 154psi plugs are all dry black ,may be a sensor? Any suggestions

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  • John Binning
    John Binning Apr 27, 2017

    Might be helpful if it wasn't just a bunch of letters and numbers

  • Dana Taylor Apr 27, 2017

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1 Answer

I have a mitsubishi l300 with a 4G64 engine I have just replaced main bearings it ran ok but now it's blowing smoke. Compression is ok but all the plugs are dry black as if it's getting too much fuel


F]ENGINE Workshop Manual 4G6 (EW) - mmc@mitsubishi-motors.kiev.ua

mitsubishi-motors.kiev.ua/Manuals/Engine/pwee9616/11A.pdf

you have to run it in and wait and see
you may burn up a set of plugs

renew main bearings only raise the conrods and pistons
so piston and rings will run in a different position up the cylinder wall

only doing mains and not conrods and re-ring is a strange thing to do

Apr 16, 2017 | Mitsubishi Cars & Trucks

1 Answer

Ok so I have a 1996 golf gti and for some reason it will blow out this really thick cloud of white smoke when I try to step on it and go fast it happends every time in second gear when I hit 4,000 rpm but...


First thing - How Many Miles does this Golf Have?
Which engine does it have?
Diesel? Smoke on acceleration indicates the injection pump may need attention.
Gas Engine? Don't believe a turbocharger was a factory option - so - smoke on acceleration is probably piston rings - usually happens after a lot of miles. Best way to confirm that is by running a compression test - dry/wet test - warm up engine, check compression (dry part) - then - add a couple squirts of oil to the cylinder and check compression again.
If the added oil increases compression by 20 to 30 PSI or more / you have compression ring issues.
Let me know if this helps you out
thanks

Mar 22, 2015 | Volkswagen Golf / Gti

1 Answer

Spark plugs getting wet from fuel, compression ok, not starting, timing ok, spark ok, new spark plugs, changed fuel pump in tank,


Check fuel pressure regulator. The actual pressure with a gauge the clean injectors. I'd double check the timing. It also can be the throttle body. Only so many fuel problems the take a good look at the distributor. Small crack or bad wire gives off spark but might not be enough small 4 cylinder for their pecission motors need to be precise check fuses and main busses those are easy and cheap fixes

Jan 01, 2015 | Mitsubishi Cars & Trucks

3 Answers

Galant overheating


water pump and head gasket is giving problem......the cooling fan is working?

Jul 15, 2014 | 1999 Mitsubishi Galant

1 Answer

I have a 1992 gmc jimmy s15....it will turn over and getting fuel and getting fire but will not crank. whats the problem? I have replaced the fuel pump, fuel relay, injectors,pressure regulator, dist.cap....


did you replace spark wire 1 by one,? if not bingo, you layed them down wrong.... (did car just die, by self or after a tune up?)
4.3L V6?

please stop throwing parts, you rich>? (60k tune up excepted always)
the EFI engines will not put out fuel if spark is dead.
what does getting fuel mean?
1: injectors squirt?
2: the cracked open rail plug dribbles?
what?
3;spark plug tips wet,
4: black smoke out tail. what/?
it's a no start, cranks perfect car, you keep saying no crank.
A car that can not crank and can never be started unless push started,
with a M/T STICK gear box.
ANSWER: ?
seems to me its flooding. , no>? soaking wet spark plug tips?
when EFI , floods a car , WOT cranking clears the flood.
Wide open throttle, its in you operator guide, RTM.
so if flooding, what i do us cut power to the fuel pump
the crank it dry. (black smoke out the tail, and then sputters an runs and stalls)
then, i try only test fuel. that is right,, no fuel pump power.
and make sure my engines sounds perfect with just test fuel.
if that is all true runs on test fuel,
then the problem is FUELING ONLY>
all in the span of 10mins work.

see scotty do that here.
http://www.youtube.com/watch?v=064Ilsz8Fzg&feature=player_detailpage#t=1

this is a very old car is this a TBI car, a very old single injector
engines or MPI , multipoint injection.

read the wiki, see all those engines.
and EFI
which one do you have.

http://en.wikipedia.org/wiki/GMC_S-15
yours is LB4 or L35 engine?
APPLES and ORANGE different. ! TBI/ MPI.

Oct 08, 2013 | Cars & Trucks

2 Answers

1991 geo storm gsi,Was going down the road fine and all of a sudden It cut off and cannot restart it what could be the possible problem or cuses.


same answer for all cars made 1920 to now.
never restarted ,ever ? gee , a little hint...?
1: lost engine compression hot, (gee forgot to do the 60k serviice/)
2: lost spark , yes, check spark at all 4 cyl. if bad check coil spark.
3: lost fuel or too much fuel called flooding.

one removes a spark plug, it drips of fuel , say all 4.
flooding.
crank motor at WOT, wide open throttle to clear flooding.
if the spark is good and the spark tips are dry, then try test fuel
if car starts and dies. then you lost injection.

easy huh> with the above you know exactly why it fails.
compression bad
spark
fueling.

1991 i think is TBI single injection engine, i can look it up but
no i wont. we need to do the tests first to get there.

Oct 03, 2013 | 1992 Geo Storm

1 Answer

1987 5.0 mustang turns over got spark doesnt start tones of gas in cyllenders timing is set still wont start. took plugs out and there soaked with fuel got spark and still does not run


you're a victim of a flooded engine. if it's got fuel injection then crank it with the gas pedal fully depressed; that's called a clear flood mode that shuts down the injectors while cranking to give the plugs a chance to dry off. if it's got a carburetor then you'll have to take the plugs out and dry them off manually. in either case you should pull out the oil dipstick and smell it; if it smells strongly of gas you should change the oil to avoid bearing failure because the oil has gas in it and is too thin to lubricate. I usually take out the plugs and either blow them dry with a compressor or put them on a hot plate to warm them up so if there is any gas in the cylinders it will ignite faster. while they are heating up I blow the cylinders with compressed air to eliminate any accumulated fuel in the cyl. before I put the plugs back in. make sure the choke is open and crank it with the gas pedal fully depressed for about 5-10 seconds and then release the gas pedal. It should start.

Feb 27, 2013 | Cars & Trucks

2 Answers

4d56 Pajero Turbo Diesel, blow's alot of smoke under load. Replaced airfilter and using injector additive atm. Still blows a heap of smoke.


If your car is fitted with Manifold Air Pressure sensor (MAP) check that is operating OK. Sometimes if this is as at fault it can send the wrong signal that the engine is running lean and the engine computer (ECU) in turn compensates by injecting extra fuel. The clouds of smoke are unburnt fuel so not only does it look bad but it is wasteful/costly. The fault on a MAP can evolve slowly and therefore evades the computer diagnostics check for some while before being picked up. Also on the list of things to look at are:- 1) the mass air sensor on the air filter ducting 2) the EGR exhaust gas recirculation valve (perhaps needs a thorough clean) 3) the differential pressure feedback exhaust (DFPE) sensor - lies upstream of the EGR but if faulty can combine to lead to errors in fuel injection quantities.

May 25, 2010 | 1988 Mitsubishi Pickup

2 Answers

Heap of white smoke on startup but not always


White smoke usually occurs when there is not enough heat to burn the fuel. The unburned fuel particles go out the tailpipe and typically produce a rich fuel smell. It's not unusual to see white smoke in the exhaust during cold weather until the engine warms up.

Faulty glow plugs or control module can cause white smoke on engine start up.

Low engine cranking speed may also produce white smoke.

If white smoke is still visible after the engine has warmed up, the engine may have one or more bad injectors, retarded injection timing or a worn injection pump.

Low compression or air in the fuel system can also be a source of white smoke.

May 20, 2009 | 1992 Daihatsu Charade

2 Answers

I have a 2000 Triton 2.8 diesel mk 4wd regularly serviced that blows black smoke constantly under power & uses excessive fuel


does your regular service includes the injection pump being brought down for cleaning and maintenance?

it is an injection pump problem. inside the injection pump are valves and strainers that are not accessible for regular users. they could only be cleaned or replaced by these people who work with injection pumps and they would calibrate the injectors also so that it would not be blowing black gas and uses excessive fuel.

tnx 4 using fixya,

drcool

Sep 13, 2008 | Mitsubishi Pickup Cars & Trucks

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