timing running me crazy
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
Dude, it's not that tough to set the base timing. Here is a link (with photos) of how to do it: How to properly set the timing on a 302 or 351 - FSB Forums
My buddy Scott created the write-up and took the pics.
I hope this helps you out.
How are you "setting the idle RPM"? It is not user adjustable.
My buddy Scott created the write-up and took the pics.
I hope this helps you out.
How are you "setting the idle RPM"? It is not user adjustable.
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Senior User
Joined: Dec 2011
Posts: 171
Likes: 0
From: Blooming Grove ,tx
I'm not setting the idle RPM per say. I move the dist until the RPM's are at 600 to 650 and the truck is running smooth. BUT , the throttle does not have a normal quick response.
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
Set the base timing, with the SPOUT out, then figure out why the idle is off. If the idle is too high with the timing set correctly then I suspect a vacuum leak(s). If the timing does not change with the SPOUT in or out then you have a bigger issue.
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Senior User
Joined: Dec 2011
Posts: 171
Likes: 0
From: Blooming Grove ,tx
Thanks for the link. I will start over. I basically did this except but I dropped in the dist at 0 degrees. Makes since to drop in at 10 BTC. And this may fix it if not I will look for vaccum leaks.
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Senior User
Joined: Dec 2011
Posts: 171
Likes: 0
From: Blooming Grove ,tx
A big thanks to rla2005. With the use of the thread u sent I am now on time. BUT , now I got a popping sounds like in the plenum but not sure. And when I give it throttle it sounds like a backfire on the drivers side. Other than that it runs good and good throttle response. Just needs fine tuning. Any ideas ?
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Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
You should stick to one thread. The "popping" noise maybe from a vacuum leak, bad valve, etc. You did say before when the timing was set correctly the idle rpm was high. This leads me to believe you have a vacuum leak.
Remind us again why you had to set the timing in the first place?
Remind us again why you had to set the timing in the first place?
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
Time to start looking at some basics. Do a compression check. Perhaps a valve has not sealed properly. Could still be a small vacuum leak in an intake runner.
Another scenario is if the heads and block were shaved then the pushrod length could be too long, which would unseat the valve(s). That is a stretch, but something to consider.
Another scenario is if the heads and block were shaved then the pushrod length could be too long, which would unseat the valve(s). That is a stretch, but something to consider.
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