07-04-2014, 07:34 PM
Join Date: Jul 2014
1995 3.4L cylinder #2 flooding
I had a fuel injector leaking small amounts of fuel for a month now. A buddy of mine who is mechanic (redneck) said the o-ring was bad. Alot of work for a simple o-ring so I put it on the back burner.
Then 1 day I am driving on I-55 in Memphis and noticed my Check Gauges indicator was lit then noticed my temperature gauge is above 260 and pegged at max "around 300 I would guess" so I pull over to take a look.
I see no steam or overheating signs under the hood. I see no fluid in the radiator so I put in a gallon I had in the back and notice it running out on the ground. I track down the leak and its the passenger side freeze plug. Called my buddy and put it on his trailer and towed it home.
He said he would be able to replace the freeze plug without dropping the engine or taking it out. I then decided to fix that fuel injector too and other things like the a/c compressor which is leaking and my radiator which last year when I flushed it look really bad so I ordered the radiator on ebay for $67 free shipping which was a perfect fit but first the freeze plug, check for leaks then work on the other stuff. He broke the plastic connector on the crankshaft sensor so I ordered one of those too.
With the freeze plug replaced and a new crankshaft sensor I filled with water to check for leaks then started it up, turned the heater on and filled with more water. No leaks so that repair was successful. No water in the oil and no water coming out the exhaust so we were confident that the head gasket was still good.
Now comes the injector and we pull the radiator, Throttle Body, Upper Plenum, Fuel Rail and injectors, hoses, Thermostat and housing, and temp sensor. The center 4 injectors were very badly rusted and the leaking injector was not the o-ring but leaking from the side of the rusted injector. Where the injectors sit in the lower intake manifold were full of water. The outer 2 caddy corner injectors has no rust and looked really good.
I ordered 6 new injectors, temp sensor, 160 degree thermostat, radiator, hoses. plugs, and TB gasket. After about 2 weeks we got it all back together as it rained nearly every day or so. It started up and ran smooth and I thanked my lucky stars as things like these always have some unforeseen issue for me.
I changed the oil and filter and confirmed no water/fuel in the oil.
A few days later I went to visit my parents about 2hrs away and after filling up with gas I headed out and it died on me. My buddy came with his trailer and it started up and drove it on the trailer and it started up and drove off after towing it home.
When we started working on it it would not start. We tried all we could think of then he decided to put in the old crankshaft sensor and it started right up.
I went and got another new one and we got 2 more from the junk yard and none would work but the old one. During this troubleshooting the engine locked up. Turns out cylinder #2 was full of fuel. I changed the oil again and it smelled of gas and was black. After that it started up I made a 300 mile trip for business. I drove it to visit my parents 150 miles away and now its locked up again. I pulled the plug and it is wet with fuel. Turned it over and compressed the fuel out of it, put the plug back in and it started right up.
So now my question is what could be causing it to fill with fuel when the car is off?
The fuel pressure regulator seems good as I pulled of the vacuum line and its dry with no fuel smell.
It does have a little blueish smoke when started but quickly disappears.
If the injector is stuck open how does it run normal when started?
Last edited by Foosking; 07-14-2014 at 02:09 PM.