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ramhead
New User
Jan 9, 2010, 10:01 PM
Post #1 of 7
(1591 views)
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99 ram 2500 5.9 L gas 240,000 120,000 miles on this engine . -35 F did not start . put in heated shop for a week ,still dumping fuel in cylinders ,like full stream . Changed oil because of gas in it ,new plugs,checked voltage to injectors and sensors also ohms for injectors in range . any ideas ? This is a MPI system.Thanks for any help.
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cewjoe71
Novice
Jan 9, 2010, 10:20 PM
Post #2 of 7
(1587 views)
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Check engine Compression, maybe a bad rings? hope that helped I know its probly an expensive on. If you dont have a compression tester most auto parts stores will lend or rent one.
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re-tired
Veteran
/ Moderator
Jan 10, 2010, 9:27 AM
Post #3 of 7
(1580 views)
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Are you getting a lot of fuel in all the cylinders or just one ? Compression will be low if a large amount of gas is washing the oil off the rings and going in the crankcase. Get a noid light from auto parts house and check all injector plugs while cranking eng. It shold blink . You could have a shorted driver in ecm. Another possiblity is a stuck open injector. Also , if your year has a pressure regulator (a snmall round can with a vac hose) on the fuel rail., take vac hose off and cycle key. if fuel comes out replace it..Whatever you find be sure to change oil/filter before driving .
LIFE'S SHORT GO FISH
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ramhead
New User
Jan 11, 2010, 8:36 AM
Post #4 of 7
(1564 views)
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I think it was all injectors ,after we had all cylinders dried out ,we cranked it over and just fuel vapor came out . we had all plugs out when doing this . We thought it was just too cold and fixed its self (wishful thinking) or ice in fuel. We changed oil ,filter and pumped oil into cylinders ,cranked over with fuel pump relay out and plugs out to help with compression . We put plugs back in and everything else cranked over . WE got it to fire on each cylinder that was all pulled plug was wet with gas.I think I should try the noid light check. thanks for now 
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Loren Champlain Sr
Veteran
/ Moderator
Jan 11, 2010, 6:34 PM
Post #5 of 7
(1552 views)
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ramhead; Couple of things come to mind...Check coolant temp sensor reading on scan tool. Check MAP/BARO reading, also. Report back with readings... Are you certain that you are getting spark to the plugs during crank? You can try 'clear flooding' by holding the throttle to the floor. By doing this, you are shutting off the fuel and giving full air. (don't pump the pedal...just hold it to the floor,,,if it starts running, back off so as not to over rev the engine)
Loren
SW Washington
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ramhead
New User
Jan 23, 2010, 3:52 PM
Post #6 of 7
(1518 views)
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I tried the noid light it blinked normal. I cleaned battery post ,charged up battery and held gas pedal down. Wow it started up .Tried starting up several times ,started every time ran like a charm. It did not have a pressure regulator on the fuel rail I think its on top of fuel tank. Thanks for all the help  I still don't know what was the problem,only thing maybe disconnecting battery reset something?
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Loren Champlain Sr
Veteran
/ Moderator
Jan 25, 2010, 6:12 PM
Post #7 of 7
(1501 views)
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ramhead; Thanks for the update. Glad it worked. Still, may want to 'look' at the CTS so it doesn't happen again.
Loren
SW Washington
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