Flooding issue
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Flooding issue
Hi everyone I'm new here an Im not sure if I'm posting in the right place or not but I have a 92 f150 with a 302 an I can't get it to start unless I put the accelerator to the floor an even then is runs terrible an I'll slowly let off of the pedal an it will die I've replaced the tps fuel pressure regulator an fuel filter an both fuel pumps an it holds good fuel pressure I'm at the end of my rope with this any help would be greatly appreciated thanks in advance
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Joined: Mar 2005
Posts: 4,698
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From: Mexico, Missouri
Have you checked for codes? You need to run the Key On, Engine Off test first. Also known as KOEO.
The CEL doesn't have to be illuminated for codes to be stored.
The ECT and IAT also play a part in starting, to a lesser degree. I have read where the ECT can cause a similar problem when starting if it's bad.
You can test both of those sensors as well. If you check for Key On, Engine Running (KOER) codes on a cold engine, you will see them since the engine hasn't been warned up.
Have you checked the FPR for a ruptured diaphragm? These can go bad and when the diaphragm ruptures I side, raw fuel will get sucked into the intake and cause a flooding problem.
Another problem that masks itself as flooding is the EGR valve. If the pintle inside doesn't close off, then when the truck starts it's sucking in exhaust gases and the truck runs terrible. It becomes a huge vacuum leak.
You can also try posting your problem in the '87-96 Truck category for a wider audience.
The CEL doesn't have to be illuminated for codes to be stored.
The ECT and IAT also play a part in starting, to a lesser degree. I have read where the ECT can cause a similar problem when starting if it's bad.
You can test both of those sensors as well. If you check for Key On, Engine Running (KOER) codes on a cold engine, you will see them since the engine hasn't been warned up.
Have you checked the FPR for a ruptured diaphragm? These can go bad and when the diaphragm ruptures I side, raw fuel will get sucked into the intake and cause a flooding problem.
Another problem that masks itself as flooding is the EGR valve. If the pintle inside doesn't close off, then when the truck starts it's sucking in exhaust gases and the truck runs terrible. It becomes a huge vacuum leak.
You can also try posting your problem in the '87-96 Truck category for a wider audience.
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Sandman1991
1987 - 1996 F150 & Larger F-Series Trucks
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Jan 21, 2007 05:10 PM
jeff8abug
1987 - 1996 F150 & Larger F-Series Trucks
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Dec 13, 2004 02:14 PM
