Question about 1998 Chevrolet S-10 Pickup

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Engine Flooding 1994 Chev. S-10 Pickup engine = 2.2 Number 4 cycliner is flooding out. Hydro locking the engine. We have replaced the injector and this did not help. The engine also has good compression. All other cycliners are running OK.

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Double check all freeze plugs they have been known to cause funky problems, that also could be the fuel pressure regulator malfuctioning...
hope this was helpful!!

Posted on May 19, 2009

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Posted on Jan 02, 2017

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1986 throttle body injector floods cylinders when key on. nissan 720 pickup


Maybe the injector is shorted out. At any rate it sounds like it is stuck open. You can do an ohm test of the injector, check it's resistance, but I don't know the value you need to look for on this. Just to give you a range to look for, a Chrysler injector's resistance should be 12-15 ohms. Yours should show low resistance as well. If it's open (no value at all) or if the resistance is very high (high ohms reading), it is bad.

In reference to the last statement in your post, no signal will keep it from flooding. An injector is a solenoid and normally closed. The only way to open them is to complete the circuit across their terminals. As long as the key is on, the injector will have a steady 12 volt current available to the injector on the power side. To pulse them or cause them to open, the ecu will ground the circuit for a split second, energizing the solenoid, and causing it to raise the pintle on the injector for fuel to spray out. The ecu will just keep on its merry way, pulsing the injector over and over, never realising the engine is flooded. If it's flooding with the injector connector disconnected, the injector must be stuck open.
Hope this helps you solve it. Good luck.

Jun 24, 2012 | 1986 Nissan Pickup 4WD 1986

1 Answer

1992 isuzu pickup,2.6 engine , surges up and down after 10 minutes then shuts off


1992, PICKUP, in USA? what country , ? cars are not same all over earth. sorry.
engine surges, then stalls. correct.>?

nice testing , rare here, real nice !!!!
spark good as it stalls
so if engine is ok, compression, (seems cat is not melted with 20 " HG)
is flooding or starving for fuel,.
one or the other, you can find that out.
if spark timing was ok, then the belt did not slip. on cam)
leaving only fuel issues.
so DO the magic , WOT, cranking trick this trick (logic in ECU)
cuts the injectors dead, cranked, to unflood all engine with EFI.
do that?
check spark tips, for 3 to 4 hours dead.? be next
2.6L (is 4 cylinder.) is cam belt drive, i never fail to check it first
the fail, at 60k miles, all do. all rubber band engines do.,

if all this is ok, not flooding
one can start engine with test fuel, and even keep it running
even with (hint) fuel pump relay pulled.
if that works, the fueling is wrong.
injectors leaking,? ?
if only one spark tip is wet , soaking in fuel, Injector issues.

when it stalled pull all 4 plugs and look at the tips.
(if cam is timed right) be super super first thing, on this 4 banger.

Mar 08, 2017 | 1992 Isuzu Pickup

1 Answer

Cranks fine engine runs fine but you turn off. it is hard to crank keeps turning over finally cranks


CLEAN FUEL INJECTORS.THEY ARE FLOODING THE ENGINE.WHEN YOU TURN OFF ENGINE DIRTY CLOGGED FUEL INJECTORS WILL KEEP LEAKING FUEL FLOODING ENGINE.ALSO REPLACE AIR FILTER.

Oct 25, 2010 | 1995 GMC Yukon

1 Answer

I have a 1994 Chevy S 10 pickup with a 2.2 It will not start. I have changed the crank sensor and PCM. I have 50 lbs of fuel pressure and injectors are worknig. I have spark and 150lbs of compression on...


to tell if it is a fuel problem try spraying starter fluid in air intake if it starts it's a fuel problem (check fuel filter first) was the check engine light on? also try unplugging the mass air flow sensor and try starting it

Mar 17, 2010 | 1994 Chevrolet S-10

2 Answers

White smoke from tailpipe, running poorly.


Blown head gasket for sure if its a petrol engine.

If its diesel then its overfuelling.

Jan 13, 2010 | 1994 Plymouth Voyager

1 Answer

Fuel pump issue, gradual flooding


NEED TO QUIT GUESSING.. IS THE CHECK ENGINE LIGHT ON.. SCAN FOR CODES. IF NONE THEN NEXT STEP IS TO CHECK FUEL PRESSURE.. IF IT IS GOOD.. THEN IF IT IS FLOODING OUT. ONCE IT IS FLOODED YOU CAN PULL SPARK PLUGS AND FIND THE ONE THAT IS WET,,, SUSPECT THAT INJECTOR TO BE STUCK OPEN

Nov 29, 2009 | 1988 Isuzu Pickup 2WD

1 Answer

When starting my 94 suburban, the fuel injectors flood the engine


replace them the seals at the top leak over time. Its throttle body injection and there are only 2 of them and are easy to replace.

Aug 05, 2009 | 1994 Chevrolet Suburban

2 Answers

I have a problem with my truck starting, chevy 1990 throttle body type 2 top injectors. It takes several cranks to start if it even starts at all without flooding the engine. _ having this problem before I...


I had the same problem with my 1990 chevy 1500 (350) replaced the plugs and wires no luck. I replaced the fuel pressure regulator, still no luck. So i called my mechanic he said it would either be the map sensore or the coolant temp sensor. I didnt figure the coolant temp sensor would cause my truck to flood but it was a 17 dollar part so i gave it a shot, took 10 seconds to switch it out with a 19mil deep socket. Truck fired up and ran like a top no more flooding. =)

Jun 23, 2009 | 1990 Chevrolet C1500

1 Answer

91 civic engine flooding


2 things come to mind.. Fuel pressure regulator.. and Leaking injectors..

Mar 08, 2009 | 1991 Honda Civic

1 Answer

Engine flooding on #2 and #4 cylinders, replaced fuel injectors, TPS, and ECM.


Just a suggestion, but get a fuel pressure gauge and check your pressure regulator.  They use intake vacuum to control a diaphram that regulates the fuel based on RPM/vacuum relationship.  I had a Supra with a similar problem - had all the mechanics stumped.  It was flooding in #1 and # 2 cyl. badly.  Turns out rubber diaphram in pressure reg. cracked and the engine vacuum was pulling gas directly into the intake manifold on top of what the injectors were supplying!  Also, lifting the regulator's vacuum line off the manifold and holding it close to the vacuum, you'll actually see gas getting sucked in if that's the problem.  I took the same route you did, replaced inj. etc, before I stumbled on this.  Good luck!

Jul 20, 2008 | 1992 Nissan 240SX Fastback

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