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1997 F-350 with 460 update

D

davida

Member
I need some help. After going through the manual and everything checking out I finally decided the engine should crank and run but it would not, so I advanced the distributor for around 10 degrees to 25 degrees and the engine starts right up every time. Reinstall the little plug next to the fire wall you have to remove to set the timing and it cranks and starts just fine.

Problem is the timing is to far advanced to keep the engine cool and to have any power.

What has messed up or went out to cause this change in timing? At 82,000 miles I don't think the timing chain has slipped any and I know the distributor has not moved.

What electronic part do I need to replace to fix this?

Thank you for your help.
 
ON a 97 the timing is controled by the computer. There are a couple of sensors involved so you need to run a scan on the puter. If no codes come up then most likely the computer is bad. The older systems don't allow the scanner to actually check the computer.

I'm a big fan of the 460. I'd like to find a later 90's F250/350 with one.

Rick
 
If you had to move the dist to get it to run ,then you have a Mechanical problem . timing chain or dist drive gear . Thes will not set a code either .
 
Sounds like the inertia ring on the harmonic damper has slipped. Advanced timing does not cause overheating, late timing does. If it's over advanced, it would kick back on the starter and ping under load, late timing makes it a slug.
 
(quoted from post at 20:37:18 08/07/12) If you had to move the dist to get it to run ,then you have a Mechanical problem . timing chain or dist drive gear . Thes will not set a code either .
Click to expand...
LO or the computer is shot....Just went through this with a BIL on his Ford last year. Same deal. He tried everything that wasn't going to cost him any money for over 3 months. Called me every couple of days. I kept telling him....COMPUTER! Finally he really needed his truck and had it tow 30 miles into the dealer......they called and told him....Computer died. Gee anymore you gotta have a ton of miles on to have a timing chain failure.

Rick
 
I am going to replace the computer. Don't know if I can replace it of the dealership has to.

Knowing everything is controlled by the computer I do think that is where the problem is, but I have wondered about the pickup in the bottom of the distributor. But I don't think this is the problem knowing I have to advance the timing to start the engine and then bring the timing back down to get it to run correctly.

Just something unexpected came up when trying to read the trouble codes from the OBD I system. When I connected very thing my light never went off. From the way the manual reads it should be off until it is ready to flash codes but I just stayed on. Have you had any experience with this if is it my lack of experience with and OBD I system?
 
I was trying to go from memory as to which made it over heat. Had one that was pinging like crazy and was overheating at the same time. Retarding the timing stopped both but that was a 1969 F-100. 30 years later if I still had it I could work on that truck.

This one has been running warmer than it should while topping hills pull 20,000 lbs, back when it was 40 degrees outside.

All the truck has done this summer is haul hay from the field to the barn and pull a 16' cattle trailer.

But this problem just started Saturday but I have been wondering if something has been slowly going out.

I just know right now I have to advance the timing to crank it and bring it back for the engine to run right.
 
Noting moved. I marked the position of the distributor, moved it and the engine started. When I reset the timing to 10 degrees the marks I made lined back up and the engine would not start back without advancing the timing to 25 or 30 degrees.
 
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