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Old 06-06-2013, 12:15 PM   #1
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Running rich

My 95 2.5l has been running rich lately. So rich that it will occasionally flood itself after having turned it off. Can anyone point me in the right direction of possible causes? Thanks in advance!

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Old 06-06-2013, 12:30 PM   #2
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I did a full tune up within the last 2000 miles (cap, rotor, plugs/wires, coil, cleaned the throttle body, fuel filter, etc). It only floods itself after being run hard, here in WV I mean climbing a steep grade for a few miles that kinda thing. If any other particulars are needed let me know

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Old 06-06-2013, 02:59 PM   #3
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Don't know how it can flood itself after engine is turned off if its FI. The temp sensor may be bad and giving ecm wrong info, making it run rich when engine is hot. Any codes?
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Old 06-06-2013, 03:42 PM   #4
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I recently had the same problem. I had a busted injector. It was sticking open. When the engine was shut off, all the fuel in the rail drained into the number 5 cylinder and flooded the hell out of the engine. Eventually, the injector stuck open and flooded so badly, causing no start. What a mess. I would pull the rails with the injector attached and check flow with just the fuel pump on and then while cranking. One other sign that the injector is sticking open would be to monitor the pressure at the rail with the engine running and see if it drops slowly or quickly after you cut the engine. If it drops quickly, then your injector may be stuck open. Good luck.
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Old 06-06-2013, 07:25 PM   #5
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So, update... I took it all apart and there was no leaking fuel until I took an injector out of the rail. I took all the injectors and fuel regulator out and cleaned them all, everything was skanky and found some chunks of old rubber/plastic lodged in the fuel regulator area. From what I've read so far it is probably time for a new fuel regulator. Put it all back and it started right up. I'm assuming that partly had to do with the excess fuel having evaporated too.
Ill keep updating when I go to class in the morning.
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Old 06-07-2013, 02:16 PM   #6
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Quote:
Originally Posted by Drpinkydo View Post
I recently had the same problem. I had a busted injector. It was sticking open. When the engine was shut off, all the fuel in the rail drained into the number 5 cylinder and flooded the hell out of the engine. Eventually, the injector stuck open and flooded so badly, causing no start. What a mess. I would pull the rails with the injector attached and check flow with just the fuel pump on and then while cranking. One other sign that the injector is sticking open would be to monitor the pressure at the rail with the engine running and see if it drops slowly or quickly after you cut the engine. If it drops quickly, then your injector may be stuck open. Good luck.
Good call
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2013 WRANGLER SPORT 2 DR., V-6 ,AUTO,HARD TOP
(Sold)1994 Jeep Wrangler 2.5L, Bestop top
/w steel half door and slider windows
5 speed, 2.5" lift, 31" tires,rack lights
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Old 06-09-2013, 09:38 PM   #7
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Glad you got it worked out 👏

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