Ford Repair Questions? Ask a Mechanic for Answers ASAP
It's my understanding that this truck uses the cam position sensor for injector pulse. Since it will run and you have good fuel pressure to the rail, and it will run off carb cleaner, then it seems there is a problem with the cam sensor signal to the pcm. This could be a failed sensor or a sensor that is out of time. This model uses a syncro tool to adjust the sensor. It could be that it's out of sync and causing the problem.
Hate to say that I am not 100% sure if this is the problem, but changing the belt may change the position of the cam sensor enough to be preventing the injector pulse.
Give it a try and let me know. If it doesn't resolve the problem, then let me know and I will open it back up for the other experts.
If it does, please throw me a positive rating. If not, no rating so I can open it up and the expert that can help does get paid.
I misunderstood and thought there wasn't injector pulse.
Since it will run off the starting fluid it seemed like no pulse.
Let me open it back up for the other experts and see what they think.
Please don't reply or rate because I want to see you get the help on this and they won't see it if you reply.
Hi Im David......vehicle was running fine, had a good history prior to the belt jumping time?
OK, Lets do a compression test first my friend
actually, before that, loosen the distributor and turn it a bit either way, then try starting.
did you make sure the rotor was point to #1 at tdc?
sorry for the error, i got stuck in the 80's for a minute
and since it was running great before the timing belt issue and being that its not an interference engine then you're probably right on not worrying about the compression test. i will opt out and let someone else take over also.
I gotta jump in one more time. did you make sure the crank shaft reluctor wheel didnt get damaged when the belt messd up?
if the sensor wheel is ok, just double check everything. tdc on compression stroke, maybe you were 180 out? alot of guys set the timing 10 btdc which is not correct. make sure the keyway on the cam straight down the crank key way straight up, then set tension. that pretty much all there is to it as you already know
Ill stick with you unless you dont want me to, thats fine we have a lot of knowledge on here and our ultimate goal is your satisfaction.. I gotta run for a few, but will be back on later.
Just my 2 cents, based on everything I read here, you have a crank sensor issue identifying #1 correctly for injector timing. Did you use this tool when installing the crank sensor?
Its the only thing that makes any sense to me, I could be wrong. I mean it runs on external fuel, right? So compression and ignition good, Do you have any idea if it is getting fuel in the cylinders? Plugs getting wet or smell like fuel? If there's fuel pressure and pulsewidth and new injectors....
That's a tight spec on the air gap, I assume it must be important.
Its a dual function sensor, it has two sensors one hall effect which is used for cyl #1 position to time the injectors and the other sensor is the profile pickup used for spark and crankshaft speed for the PCM. That's why there is no cam sensor. The alignment procedure is for the hall effect sensor. I am not sure what the strategy is in the PCM if the hall effect is not timed correctly, whether it goes into some kind of limited strategy or not. I know when vehicles that have cam sensors out of time even by a degree or two the engine will start and stall repeatedly.
If you need further assistance please feel free to reply and we can continue. Otherwise please take a moment to rate my answer as you see fit. After rating, the thread is still available should you need further assistance. Experts are not compensated without a positive rating. Providing a rating does not close the question, you can reply or ask additional questions without incurring further charges.