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04-29-2007, 01:01 PM | #1 |
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Join Date: Feb 2002
Location: Jacksonville, FL
Posts: 706
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Major Fuel Injector Prob, intake full!
Gents,
Something is very bad in my motor. My fuel injectors have managed to fill up the intake with fuel. I put the key in the ignition, haven't even tried to turn the car over for 6 weeks. No cranking at all and it filled up at least 3 cylinders. I heard a "tick tick" from the injectors and thought that was weird. Well, this is bad. What the hell happened? History: Car was running fine, then stopped one day idling in driveway. That's it. Will not hold fuel pressure (cause it's dumping into the cylinders)... Update: Constant 12v to each injector with the ignition on, no pulsing, just constant...
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1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy Last edited by Hozer 88GTConv; 04-29-2007 at 01:42 PM.. |
04-29-2007, 08:59 PM | #2 |
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Location: Jacksonville, FL
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Re: Major Fuel Injector Prob, intake full!
Swapped computers and voila!
I pulled the plugs and shot the fuel out. It started up, but I only ran it for a minute b/c I feared fuel contamination. Sure enough, the oil had a quart of fuel in it easy. I was worried I would spin a bearing, but it seems to be okay after a fresh oil change. No valve ticking at all. I just have a bad intake backfire, I didn't rtv the intake gasket b/c I was in a rush. So, that should be it... I'll let you know.
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1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy |
05-02-2007, 11:34 AM | #3 |
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Location: Jacksonville, FL
Posts: 706
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Re: Major Fuel Injector Prob, intake full!
Three day update:
a.Properly sealed the upr/lwr intake b.Hooked the Anderson PMS back up, what a great piece of eqpt. The stang has been running fine for two days commuting, steady idle, good accel, 02's are reading normally although my wideband is on my h-pipe and it's showing a leaner condition than the 02's farther upstream. I'm wondering if the lack of backpressure is adversely affecting the wideband reading. I had it installed by a great Mustang performance shop guy, so I want to doubt that theory. Btw, I think the Amderson PMS is a great piece of gear, despite the price.
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1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy |
05-07-2007, 11:21 AM | #4 |
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Join Date: Mar 2004
Location: Minnesota
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Re: Major Fuel Injector Prob, intake full!
Wow, thats crazy.
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Alex |
05-07-2007, 12:13 PM | #5 |
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Join Date: Feb 2002
Location: Jacksonville, FL
Posts: 706
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Re: Major Fuel Injector Prob, intake full!
Yeah, I only have 10k on the new motor and was sweating that I jacked up the bearings.
I still will perform a compression test on each cylinder, but what is done is done. It seems to be okay, just needs a little tuning on the low end and she'll be okay. This is what happens when you don't fire the stang up for 7 weeks. They get angry, very very angry.
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1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy |
05-22-2007, 04:23 PM | #6 |
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Join Date: Apr 2001
Location: Gallatin, Tn
Posts: 1,326
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Re: Major Fuel Injector Prob, intake full!
You said you swapped computers, wonder if the old one was just feeding a constant pulse to those couple injectors, never seen anything like that, ever! I guess the injector could be leaking but that would only be under the fuel system being pressurized......hmmm, WILD pic!
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05-22-2007, 05:38 PM | #7 |
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Join Date: Feb 2002
Location: Jacksonville, FL
Posts: 706
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Re: Major Fuel Injector Prob, intake full!
good thing I didn't have a cigar, which is typically what I do while working on the car...
several weeks now and she's running great....
__________________
1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy |
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