Timing question . 76 350 Ci automatic
#1
Timing question . 76 350 Ci automatic
Guys
I just got my car running first test drive . The was running rich . When I checked the timing the mark on the balancer is lighting up way above the marks on the timing cover . I moved the distributor to get the Marks closer the car almost died . So I timed it by ear . It's running better however the mark is way above the timing cover hash marks . Does this mean someone stabbed the distributor a tooth off . I guess this means I need to remove spark plug at number 1 . Bring up to tdc. Then check the distributor ? Thanks for any suggestions
I just got my car running first test drive . The was running rich . When I checked the timing the mark on the balancer is lighting up way above the marks on the timing cover . I moved the distributor to get the Marks closer the car almost died . So I timed it by ear . It's running better however the mark is way above the timing cover hash marks . Does this mean someone stabbed the distributor a tooth off . I guess this means I need to remove spark plug at number 1 . Bring up to tdc. Then check the distributor ? Thanks for any suggestions
#3
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The distributor being "one tooth off" has no effect at all on timing - the timing can be correctly set no matter what clocking position the distributor is installed - it can be "off" one tooth or 10 teeth, and the engine can still be correctly timed with no problem - it's a cosmetic clocking issue only. If you left the vacuum advance hooked up when you checked the timing, the timing mark will be about 30 degrees beyond the timing plate - that's normal. Initial timing with vacuum disconnected should be in the mid-teens. If the engine won't idle with initial timing in the mid-teens (with vac advance disconnected), you need to do an accurate TDC verification to assure that your balancer has not slipped. This needs to be done accurately with a piston stop - not just visually verifying the piston near TDC.
Lars
Lars
#4
How about the balancer?
The distributor being "one tooth off" has no effect at all on timing - the timing can be correctly set no matter what clocking position the distributor is installed - it can be "off" one tooth or 10 teeth, and the engine can still be correctly timed with no problem - it's a cosmetic clocking issue only. If you left the vacuum advance hooked up when you checked the timing, the timing mark will be about 30 degrees beyond the timing plate - that's normal. Initial timing with vacuum disconnected should be in the mid-teens. If the engine won't idle with initial timing in the mid-teens (with vac advance disconnected), you need to do an accurate TDC verification to assure that your balancer has not slipped. This needs to be done accurately with a piston stop - not just visually verifying the piston near TDC.
Lars
Lars
Lars
how about the harmonic balancer? I've am suspecting it may have been changed . I have heard that some are marked at12 o'clock and others like mine more to one side at 1 o'clock ? Should I just put the car at TDC and mark the balancer on the "0" on the timing marks?
#5
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No - as noted, you need to do a TDC verification. If you don't know how to do this, simply drop me an e-mail request for my "TDC Verification" paper - it has complete instructions. Once you have verified and marked TDC, you can correctly set your timing as outlined in my timing paper. Let me know if you need a copy of that, too. You might also want a copy of my "HEI Distributor Installation" paper to make sure your distributor is correctly installed and clocked.
Lars
V8FastCars@msn.com
Lars
V8FastCars@msn.com
Last edited by lars; 06-17-2019 at 04:35 PM.