Question about 1995 Chevrolet S-10 CA Edition

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Fuel injector stuck open and dumped fuel into oil got new injectors and changed oil and fixed that problem but now it starts rough idles and stalls seems to have no power now

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  • Jeff Turcotte
    Jeff Turcotte Oct 10, 2010

    is the engine light on?

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  • 195 Answers

Check your spark plugs may have fouled out!

Posted on Oct 10, 2010

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2 Answers

Our mountaineer is getting gas into the oil. What could possibly be the problem.


Fuel pressure regulator. or stuck open injector/s. The only way gas can reach the oil is threw the piston rings. Gas will seep threw them. regulators can dump a lot of fuel threw the plenum. An open injector will bleed off pressure(when turned off)) and dump gas right into the piston.

Apr 01, 2016 | Cars & Trucks

1 Answer

Why won't it start?


you need to use the correct injector for your application as for the no start problem you have now pull the plugs and make sure they are clean and not flooded out from excessive fuel, also make sure the oil in the crankcase has not been contaminated with fuel

Oct 27, 2015 | 1990 Jeep Wrangler

1 Answer

STARTING PROBLEM, WONT IDLE,BLACK SMOKE, ONCE STARTED IT SOUNDS ROGUTH


This problem is a bit more difficult to diagnose because half of your symptoms rule out half of the solutions. I would think the ISC control could be dirty or not working or your fuel injectors are sticking open.

With black exhaust smoke you are running rich. Often the "Cold start sequence" is at fault for poor starts making the engine too lean when the sequence fails. An intake air leak can cause the engine to run Rich, causing the black smoke, rough idle, rough running conditions. This is still a possibility, but the on-board computer usually sets a Code saying you are running "Lean" and then enriches the fuel ratio and floods the engine by itself.

Now the fuel injectors can cause several of your problems. For start-up problems, the remaining fuel pressure can dump fuel into the engine as the car sits because the injectors are sticking open. Someone would need to perform a fuel pressure bleed-down test to see if you have this problem.

Another way to verify this problem is to capture the oil during an oil change and smell it for gasoline fumes. The dilution of the oil will destroy the engine. If the injectors are found to be the problem, a new oil filter and change are needed.

Mar 17, 2014 | Ford Escort Cars & Trucks

1 Answer

1997 chevy silverado 5.7 engine problem, fuel is getting dumped in the motor when running,extremly rich condition to the point where raw gas is dripping out the exhaust


YOU HAVE A INJECTOR PROBLEM ONE OR TWO INJECTORS ARE STUCK OPEN OR BAD 02 SENSORS BUT MOST LIKELY INJECTORS ARE STUCK OPEN LET ME KNOW IF YOU NEED MORE HELP

Nov 18, 2012 | Cars & Trucks

1 Answer

91 s10 4.3 is dumping fuel causing a start and stall situation


Sounds like it is too lean if you have to take it easy with the throttle.
Too much fuel should make it not idle but run better with the throttle open.
Yes the regulator could be allowing fuel into the intake.
A shorted injector could be grounding the others and making them "on" too much.
One or two injectors could be dirty and leaking fuel when they are supposed to be closed.

Jul 31, 2012 | 1991 Chevrolet S-10

1 Answer

1990 Jeep Wrangler 2.5l idles rough/ black smoke/ fuel odor


You could pay a garage to diagnose the problem cheaper than throwing more parts at it.
The problems may be connected or they may be different issues.
Yes I would change the oil and filter, but first I would make sure the fuel system is not dumping too much fuel into the cylinders.
The O2 sensor helps the computer decide on how much fuel the engine needs, along with the other sensors. And you said you have already replaced the O2 sensor.
A mechanic would take a scanner and "read" the sensors and look for something out of normal range.
The fuel pump and fuel filter are off the list as far as causing a rich mixture goes.
I would start with the rich mixture and then see if fixing that issue takes care of the no start when hot issue.
Change the oil and filter first, and see if the injector is on too much.
You can watch the spray and tell - at idle it should be very light.
Also look at the engine temp - is it warming up to normal 195 degrees? Can you tell if the fuel pressure regulator is blown and pouring fuel into the throttle body ?
Without a scanner its going to be more difficult, but not impossible to diagnose.
Let me know what you find out.

Jul 23, 2012 | 1990 Jeep Wrangler

1 Answer

My 1986 Nissan 300zx non-turbo was running fine, then just stalled out suddenly and would not restart. I checked the plugs, wiring, fuel, all are OK. I installed a new coil, distributor cap and rotor. If I...


It sounds like the number 2 injector is hung open.

It will dump fuel and cause all sorts off issues with the ECU.

You should ohm that injector and compare it with the others to see if it is wildly different. If so, change it out and retest.

Jun 27, 2010 | 1986 Nissan 300ZX

4 Answers

1996 f250 7.3 powerstroke has rough idle on starts


it sounds like to that it is either worn/ old injectors,dirtly HPOP (high pressure oil pump) oil worn HPOP pump or dirty fuel filters or fuel. you can take truck to a qualified diesel shop and they can do a buzz test on your injectors and see if they need to be replaced with a buzz test the tester will buzz all eight injectors with engine off and you can hear the buzz of the injectors then it will go through and buzz each injectors individually in firing order to der determin witch ones are bad. the bad injectors will be alot quieter than the other and most testing equipent will show what they are running at. hope this helps.

Apr 07, 2010 | 1996 Ford F250 Crew Cab

2 Answers

93 chevy corsica. problem is after startup gas just pours out of the throttle body intake as the car stalls - probably half o cup of gas pours out. Is an injector stuck open? any advice?


Yes, most likely cause is an injector is stuck. The real problem is that you are removing the oil from the upper engine and it's protection with this issue.
Fix it forthwith, and when done, change the oil...it has been diluted by fuel...

Doc

Sep 11, 2009 | 1993 Chevrolet Corsica

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