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1993 302 5.0 f150 starting problem

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03 Mar 2019 17:32 #27565 by wacoeagle
Replied by wacoeagle on topic 1993 302 5.0 f150 starting problem
last reply.. IT CAN STILL BE INSTALLED 180 degrees off if you didnt verify if the cam was on its compression or exhaust stroke, the eng reaches TDC TWICE in a cycle.
how did you verify it was at TDC on the compression stroke? also you cant just put a new distributor in just like the old one was and expect it to be right.. you need a timing light. go see autozone for the rent a tool program..
If you have spark which you say you do at the spark plugs (every one), if you have compression , which you say you do,, (all cylinders, ), and sprayed some starting fluid as you said you did, it has NO CHOICE but to run if it is in correct timing .
Yet you insist you do not have a timing problem because it took you forever to get the distributor back in., listen ive been there, good luck!!!

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03 Mar 2019 17:34 #27566 by wacoeagle
Replied by wacoeagle on topic 1993 302 5.0 f150 starting problem
when they are 180 out the motor wont even fart!!!!

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04 Mar 2019 06:43 #27577 by guafa
Replied by guafa on topic 1993 302 5.0 f150 starting problem
Have you checked back pressure? When nothing works and i'm lost, that is the last thing i do.

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  • Josh3089
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04 Mar 2019 19:27 #27601 by Josh3089
Replied by Josh3089 on topic 1993 302 5.0 f150 starting problem
But it didnt take us forever to get the distributor in maybe 20 minutes to get the old one out look it over and decide we are going to put the new one in. Putting new plug wires in because the spark is weak according to last spark test and told by a motor and transmission specialist what is going on and that's what he said to do and told him how we checked timing and said that works good if you know what your doing you dont need all this fancy technology shit how do you think they did it before shit like that came out

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04 Mar 2019 21:09 #27605 by guafa
Replied by guafa on topic 1993 302 5.0 f150 starting problem
I agree. Back pressure check for a clogged exhaust. Just release the joint before catalyzer. If engine starts, that's it.

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  • Noah
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05 Mar 2019 07:04 #27609 by Noah
Replied by Noah on topic 1993 302 5.0 f150 starting problem
I agree with wacoeagle here.
If you've got good spark occurring at the correct time and the valve train is operating in time, it will fire on starting fluid.
If you put fuel in fire, it will burn.
So either the timing chain is way out (kind of unlikely IMO on a pushrod engine) or the distributor isn't firing the plugs in the right order (much more likely), because the wires are maybe mixed up or the distributor is stuck wrong... Not picking on you at all, but not being able to lay hands on the truck, that is the most likey scenario.
You mention the spark was weak at some point in your previous post.
Have you corrected that issue?
If you take the plug wire off the ignition coil, you should have a good strong spark that can jump a good sized gap to a grounded test light.
If that checks, reinstall the wire and check the spark the same way coming out of the distributer cap, and at the end of a plug wire or two.

"Learn, apply, repeat."

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