i have a f 150 i am not getting fire to the plugs, can someone tell me what to check so i can get this to start.

 

welcome to the sight tom. we will need some more information like engine size and year of your truck there's way too much that can go wrong without that info. and none of us wants to mislead you by checking and replacing parts that don't need it

 

it,s a 1988 ford 150 xlt with a 302 engine someone took the relays out, i put some in from an 81 ford van with a 302 an it almost fired i need a eec relay i think to make it run, but any advice you have would be of help.

 

Tom if this is of any help let us know.
There should be at least 2 relays and they were the same part number.
One was the ECA and the other was the fuel pump relay. Are the relays the only thing missing? How are the relay plugs and related wiring?
I would need to look at a wiring diagram to see if the wiring and relays from an 81 could be the same , they could be different. How long has this vehicle been sitting?
Fuel quality etc., simple stuff, but very important.

 

i have gotten relays checked to see that now we are getting fire but it,s just not starting put fresh fuel in i think it been setting so long i need to put some oil in the plug holes an seal the rings so it might fire, i have done that before.we changed the timeing geers an chain from anouther 302 i have, still nothing but it did backfire , i am running out of things to try.

 

Did you remove the distributor and possibly installed it incorrectly?
What about the timing marks on the gears ?

 

1981 they were not fuel injected engines yet. they didn't start the fuel injection until 84 or 85 and 88 or 89 is a year all by it self. make sure that the firing order is the right order for that engine someone could have changed the engines not got it right. usually when an engine has been sitting for a long while the lifters don't have any oil in them and need to be pumped back up meaning that the engine will turn over but not start plus the old gas may be too old to burn or varnished and clogged the injectors.

 

i have checked the timeing marks on the geers thay are right on , have set the distr on #1 i am getting fire to the plugs but all it does is back fire it acts like it wants to start but just won,t, running out of things to try, i know i have fuel up to the injectures but don,t know if thay are shooting anything in the cylender the only outher thing i can do is pull one out an see if it sprays

 

Just a note. The two '85s I have owned were still carbureted. Don't know when they went to fuel-injected.

 

Since you are getting backfires would kinda tell me spark is getting to the wrong cylinder at the wrong time. I think Grindman is on to something with the firing order. Tom never did answer my question about whether or not the dist was removed. If it was, I suspect it was either installed incorrectly or the wires are not in the right firing order. Can you help us out here Tom, was the dist removed and were the plug wires all off at once?
Forgive me for asking what may seem stupid questions , but was the #1 piston up at top dead center when you installed the dist?
If so, the timing pointer should have been on TDC, just double checking.
The correct firing order for a 302 Fuel Injected engine is ; 1-3-7-2-6-5-4-8. and the dist turns counterclockwise. Make sure the 5 & 6 plug wires don't run next to one another to prevent a crossfire condition.