No start.... wtf?
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Junior User
Joined: Oct 2009
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No start.... wtf?
1970 F250 390 V8 184,000 Miles
Came home, shut it off, everything fine.
Next AM, it started, died right away (no biggie, it's done this before) cranked it again, no go.
Check the carb, got gas, pull a plug, have spark, weak, but spark.
Sooo.... new points, new cap, new rotor, new plugs, new coil and wires later, still no start, not even a pop. Notice that the distributor is about 1 plug off at TDC. Are the 390s known for jumping the timing chain?
Seems wierd, as it ran fine the night before, and no backfire or pop or anything the next morning, just it's usual occasional "ok, I'm gonna start, then stop, then I'll start", but this time no start.
Moved the plug wires around 1 wire 'off', and it acts more like it MAY start.
I'm not looking forward to pulling the timing cover, but if I gotta I gotta.
Just wondering if anyone had any ideas before I dig into this?
Thanks
Came home, shut it off, everything fine.
Next AM, it started, died right away (no biggie, it's done this before) cranked it again, no go.
Check the carb, got gas, pull a plug, have spark, weak, but spark.
Sooo.... new points, new cap, new rotor, new plugs, new coil and wires later, still no start, not even a pop. Notice that the distributor is about 1 plug off at TDC. Are the 390s known for jumping the timing chain?
Seems wierd, as it ran fine the night before, and no backfire or pop or anything the next morning, just it's usual occasional "ok, I'm gonna start, then stop, then I'll start", but this time no start.
Moved the plug wires around 1 wire 'off', and it acts more like it MAY start.
I'm not looking forward to pulling the timing cover, but if I gotta I gotta.
Just wondering if anyone had any ideas before I dig into this?
Thanks
Cargo Master
Joined: Sep 2004
Posts: 3,430
Likes: 2
From: NH
Pull the distributor and check the gear at the bottom. I have see a stripped dist gear(not on an FE. Not that I have seen many FE's other than mine). Also try to look down inside and see of you can see the matching gear.
Senior User
Joined: Nov 2009
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Take off the distributor cap. Get your big breaker bar with a socket on the crankshaft, turn it clockwise, see that the rotor in the distributor turns with it, turn it the other direction, see that the rotor turns the other direction without too much hesitation. If it passes that test, it is a good chance the problem is something other than the timing chain.
I just wasted a day pulling the timing cover for no reason.
I just wasted a day pulling the timing cover for no reason.
Lead Driver
Joined: Jan 2003
Posts: 9,893
Likes: 12
From: Ohio
If it's all original and has over 100K miles on it, then I'd say it jumped time. I've had a couple 302's get just over 100K and throw a chain. Runs fine, shut off and never run again. The backlash when shutting off usually makes the chain jump on the sprocket.
Rock crank back and forth and check distributor rotation. Pull distributor and make sure gear is ok and the roll pin hasn't sheared and allowed gear to move. If all is good, then likely timing chain.
Rock crank back and forth and check distributor rotation. Pull distributor and make sure gear is ok and the roll pin hasn't sheared and allowed gear to move. If all is good, then likely timing chain.
New User
Joined: Mar 2011
Posts: 5
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Lost all the teeth on the cam gear on a 360 a few years back. Take cap off dist. look to see if rotor cap is turning while cranking the engine.
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Junior User
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Think this might have been a problem?
http://i985.photobucket.com/albums/a...a/PICT0367.jpg
http://i985.photobucket.com/albums/a...a/PICT0370.jpg
Stock fomoco gear with almost 200,000 miles on it
New gear set and chain, and it fired right up
http://i985.photobucket.com/albums/a...a/PICT0367.jpg
http://i985.photobucket.com/albums/a...a/PICT0370.jpg
Stock fomoco gear with almost 200,000 miles on it
New gear set and chain, and it fired right up
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