I have a 88 F-350 w/460. back in jan 1/15/02 the timeing cover gasket was leaking anti-freeze so i pulled it all apart and noticed that the timeing chain have over 2inches of play on one side (truck ran great up untill now) so i changed the chain and gears ok. when the motor is cold it starts fine and runs fine, when the motor is at operateing temp it runs fine no misses at all (timeing is perfect). BUT NOW HERES THE PROBLEM when i turn it off and goto restart it turn over slowly. Its like the battery is bad or starter is bad it turns over real slowly and. I have put all new alternater,battery,starter solenoid,and cables. again on 3/23/02 i replaced alt,starter/starter solenoid,cables and timeing chain and gears, plugs,wire,cap and rotor and have tired numerous plugs and Still having same problem. I have it grounded well 1 from the frame to battery, 1 from the block to the battery, and from the battery to the body. and the bell housing is clean of crud for the starter. Now i have talked to my moms friend and he said that my valve guides/seats are going bad. he said now that i put new chain and gears that i have put valve train out of sinc, but when engine runs i goes back in sinc? Does or can anyone help with this problem I mean this motor runs very stong and great. you know i'm beating chevy's off the line with my tire smoke she runs strong and only have 139,000 on truck. please help if you have run or know some one who has run into this problem.
Thanx Craig



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1988 F-350 460ci
6" suspension lift
36" swampers

E-Mail michmudduck1(No Email Addresses In Posts!)

 

What happens if the engine has a chance to cool off ,then you try and start it ?

New Batteries are known to go bad quickly
Starters are known to be Bad from out of the box.

Perhaps your problem is a Starter getting EXTRA hot and then failing.



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once it cools off it will start. have changed battery and starter twice.

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E-Mail michmudduck1(No Email Addresses In Posts!)

 

What about Vapor lock? Maybe that is why it starts o.k. after cooling. Check all yer fuel lines and see if any run too close to a heat source. Good luck , and happy hunting!

 

Couple of other things it might be: Too much initial timing can make a engine hard to start...have you put a timing light on it to see where your at?
Also an injector that's dribbling when the engines shut off can load up the engine and make it hard to start.

 

If you replaced the chain and gears, and didn't check the ignition timing, you may have it mis-timed because of the slack in the chain that is no longer there... Previously, someone may have reset the timing to make up for the slack allowing the timing to retard a little, and then you replaced the gearset, putting the distributor into an advanced state. This would be aggravated by the engine sealing a little better when warmed up, thus producing a little more compression, and when it fires up, it is just to advanced for the starter to overcome easily...
howzaboutthatforanidea?
tom

 

the fuel lines,high pressure pump, fuel pump, both sending units and strainers. the lines are no wear near any heat source as far as the timing goes. I can turn dist. any direction while cranking does not really speed up when advanced or slow down when retarted. I have also tried moving dist 1 and 2 teeth forward and backward. when i did this it ran really crappie. ran real rough like it had a huge cam and black smoke out the duals.

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E-Mail michmudduck1(No Email Addresses In Posts!)

 

RE Timing: the timing chain and gears that i took off were orignal. Ford The Best Drive
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E-Mail michmudduck1(No Email Addresses In Posts!)

 

I have a 1988 F350 with the 460 in it. My 460 had 78k when I bought it, now it has 105k. I had the same exact problem. I put a lower temp thermostat in it and it fixed the problem. Mine was over heating, even though the gage put it in the normal region, actually exactly half way. If I am idling in heavy traffic, or towing around the farm, and the truck's temp rises, the problem returns. I am not exactly sure what is happening, whether the engine is getting too hot causing more friction, or that the engine is getting hot, causing the battery to get hot, and therefore provide less current. Not sure but mine is fixed.

JR

 

I would try adding a heat resistent covering over the starter. I would be willing to bet that that would take care of your problem.

Good Luck.

TBirdGuy

 

 

If it ran fine before you started messing with the timing gears and chain, and now doesn't...

I'd say it's highly unlikely to be anything other than something to do with the timing gears and chain. The symptom you describe sounds like a timing issue as well.

First, I'd verify that you do in fact have the correct timing set. Then, I'd check to be sure that the marks/dots line up between the cam and crank gear. (Facing each other with the cam notch at 6 o clock and the crank gear at twelve o clock).

I almost forgot to do this when I replaced my stock set with a New Ford Performance set.

Ed