93 f150 4.9 efi the death of me truck
#1
93 f150 4.9 efi the death of me truck
had this truck few weeks now had been sitting since 2019 was parked p.o had a stroke. so I've put new tank,pump,injectors.distributer,wires,cap,rotor,pl ugs.m.a.p is new e.g.r is to coolant temp is new.but it is still shoving to much fuel into cylinder #1-#3-#6 I've had several mechanics looking at it to and everyone is stumped I've dug through all wiring and fuses even replacing the i.c.m with no change in anything that I've done
#2
Welcome to FTE
What codes dose it have?
How do you know it is too much fuel and not a no spark issue if the plug are wet?
Are they wet or?
What is the fuel PSI and is the vacuum hose wet when pulled off the FPR?
How do you know it is just 1 / 3 / 6 and not the others as well?
What if you put them spark plugs in 2 / 4 / 5 and see what happens did the issue follow the plugs or stay in the same hole?
Do the same with the plug wires also.
Today's new parts may not be any good out of the box so if you were throwing parts at it you could have added more issues.
I would also like to know what the compression is on the motor.
Sorry for all the questions but they are needed to pin point where to look deeper.
Dave ----
What codes dose it have?
How do you know it is too much fuel and not a no spark issue if the plug are wet?
Are they wet or?
What is the fuel PSI and is the vacuum hose wet when pulled off the FPR?
How do you know it is just 1 / 3 / 6 and not the others as well?
What if you put them spark plugs in 2 / 4 / 5 and see what happens did the issue follow the plugs or stay in the same hole?
Do the same with the plug wires also.
Today's new parts may not be any good out of the box so if you were throwing parts at it you could have added more issues.
I would also like to know what the compression is on the motor.
Sorry for all the questions but they are needed to pin point where to look deeper.
Dave ----
#3
Welcome to FTE
What codes dose it have?
How do you know it is too much fuel and not a no spark issue if the plug are wet?
Are they wet or?
What is the fuel PSI and is the vacuum hose wet when pulled off the FPR?
How do you know it is just 1 / 3 / 6 and not the others as well?
What if you put them spark plugs in 2 / 4 / 5 and see what happens did the issue follow the plugs or stay in the same hole?
Do the same with the plug wires also.
Today's new parts may not be any good out of the box so if you were throwing parts at it you could have added more issues.
I would also like to know what the compression is on the motor.
Sorry for all the questions but they are needed to pin point where to look deeper.
Dave ----
What codes dose it have?
How do you know it is too much fuel and not a no spark issue if the plug are wet?
Are they wet or?
What is the fuel PSI and is the vacuum hose wet when pulled off the FPR?
How do you know it is just 1 / 3 / 6 and not the others as well?
What if you put them spark plugs in 2 / 4 / 5 and see what happens did the issue follow the plugs or stay in the same hole?
Do the same with the plug wires also.
Today's new parts may not be any good out of the box so if you were throwing parts at it you could have added more issues.
I would also like to know what the compression is on the motor.
Sorry for all the questions but they are needed to pin point where to look deeper.
Dave ----
The following users liked this post:
#4
Thanks for the feed back on the cause and fix as some do not reply back.
Now why did they bend is the question?
Do you know if the motor was run on the 2019 fuel?
They say old fuel can make valves stick and if stuck closed and the cam turns to try and open bent push rod.
If stuck open it should not hit the piston so no worry there.
Dave ----
Now why did they bend is the question?
Do you know if the motor was run on the 2019 fuel?
They say old fuel can make valves stick and if stuck closed and the cam turns to try and open bent push rod.
If stuck open it should not hit the piston so no worry there.
Dave ----
#6
well now it has a massive cut out to it so I'm gonna check fuel and see where pressure is at yet again
#7
Thanks for the feed back on the cause and fix as some do not reply back.
Now why did they bend is the question?
Do you know if the motor was run on the 2019 fuel?
They say old fuel can make valves stick and if stuck closed and the cam turns to try and open bent push rod.
If stuck open it should not hit the piston so no worry there.
Dave ----
Now why did they bend is the question?
Do you know if the motor was run on the 2019 fuel?
They say old fuel can make valves stick and if stuck closed and the cam turns to try and open bent push rod.
If stuck open it should not hit the piston so no worry there.
Dave ----
The following users liked this post:
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#8
Like someone turned the key off or like runs out of gas?
If just shuts off like a key I would look at the ICM.
Being a 95 and EFI the dist. runs a TFI or is it bolted to the inner fender as they did move it?
Even new they could be bad out of the box. Dont buy the cheapest one do drop a few bucks on it just like the starter solenoid.
Dave ----
#9
I agree with the previous post about the TFI Module mounted on the distributor. You might want to move it to a fender well where it will not be subjected to the component killing heat! This is a well documented fix that can be done as a DIY or with a kit designed to do the job. Do a search for "Ford TFI remote mount". I did this on my 302 and it cured the issue.
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