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1976 Ford F250 - Will not start - Help


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bcougar
New User

Nov 11, 2009, 7:36 AM

Post #1 of 6 (3338 views)
1976 Ford F250 - Will not start - Help Sign In

I have a 1976 Ford F250 that I use occasionally to do misc heavy lifting. I needed to use it yesterday, but I could not get the truck to start. The engine turns over, check the voltage on the battery and that is not an issue, and I even tried some engine starter spray to see if that would get it to start, which has worked before when the engine was cold.

Any thoughts on what could causing the problem?

TIA.


Tom Greenleaf
Ultimate Carjunky / Moderator
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Nov 11, 2009, 12:38 PM

Post #2 of 6 (3317 views)
Re: 1976 Ford F250 - Will not start - Help Sign In

What engine and how many miles if known?

If you have spark and no response from starting fluid then I suspect timing chain has jumped. You can check how worn it is by looking at timing marks set to TDC by crank bolt and turn one way then the other. If much more than 5 degrees it could be the issue.

You can get close by just using a light and look while cranking to see if it's anywhere near. Of course go easy on the starter. I suggest not more than 15 seconds and a cool down time between tries. Some say they can take up to 30 seconds but I won't crank one that long!

Note: If chains jump the engine usually cranks like it has no compression - sounds funny. Some engines when a chain jumps enough will allow valves to hit pistons and bend them. Just my experience that even these "interference" engines with real chains will just jump and not run - never had one go so far off for the crash and not all engines are interference and I don't know on this one no matter what engine it has?

If no spark let us know and some of us old pharts may have some ideas on what to check next.

Has it been a real long time since it ran last? Some old engines will allow lifter to collapse from lack of oil pressure of sitting too long but that's kinds rare,

T
_________________________________________
Long retired now


Loren Champlain Sr
Veteran / Moderator
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Nov 11, 2009, 5:57 PM

Post #3 of 6 (3308 views)
Re: 1976 Ford F250 - Will not start - Help Sign In

Excellent. To add, timing chains will usually 'jump' when the engine is turned off. So, it may have been running okay previously, but now won't start. Usually don't give you any 'warning'.
Loren
SW Washington


Tom Greenleaf
Ultimate Carjunky / Moderator
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Nov 11, 2009, 11:06 PM

Post #4 of 6 (3301 views)
Re: 1976 Ford F250 - Will not start - Help Sign In

So true Loren. Back in the Eisenhower admin when I was still working almost all cars/vehicles would get a timing chain when and if they got a water pump job if customer agreed to some extra cost.



T
_________________________________________
Long retired now


bcougar
New User

Nov 12, 2009, 8:02 AM

Post #5 of 6 (3293 views)
Re: 1976 Ford F250 - Will not start - Help Sign In


In Reply To
Excellent. To add, timing chains will usually 'jump' when the engine is turned off. So, it may have been running okay previously, but now won't start. Usually don't give you any 'warning'.


Thanks for the help. What is happening is just as you described. There is a little jump when the engine is turned off.



(This post was edited by bcougar on Nov 12, 2009, 8:03 AM)


Tom Greenleaf
Ultimate Carjunky / Moderator
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Nov 12, 2009, 9:26 AM

Post #6 of 6 (3290 views)
Re: 1976 Ford F250 - Will not start - Help Sign In

If that is it, it can jump back by itself and run but it's not right! Check degrees of lash!,

T
_________________________________________
Long retired now




1976 Ford F250 - Will not start - Help


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