bouncing timing mark
3 posters
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bouncing timing mark
o henry September 21st 2019, 3:20 pm
while checking timing , timing is bouncing. 6 -10 degree at idle... been through this month ago .. changed timing chain ( engine pro) sent distributor back to msd , put my spare magnetic pickup on set gap to 66k every thing was ok . 6 passes later timing is bouncing again .. checked chain ok air gap ok .. timing light is old sears model.. msd 7al3 box pulled all chips cleaned put back.. i cleaned my grounds .over last winter replaced my battery cable runs. any one have any other ideas..
o henry- Posts : 33
Join date : 2012-06-07
Age : 64
Location : rayland ohio
BBFTorino- Posts : 985
Join date : 2015-12-31
Re: bouncing timing mark
BBFTorino September 21st 2019, 4:43 pm
Camshaft gear teeth worn? Get a newr timing light.
BBFTorino- Posts : 985
Join date : 2015-12-31
Re: bouncing timing mark
stanger68 September 22nd 2019, 1:03 am
Some of cheaper timing lights work ok with msd and some don’t. Is the idle rpm hold steady?
stanger68- Posts : 489
Join date : 2015-12-05
Location : Birmingham, Al
Re: bouncing timing mark
o henry September 22nd 2019, 11:07 am
yea idle is fine , everything is ok except when checking timing. im borrowing different light today to try
o henry- Posts : 33
Join date : 2012-06-07
Age : 64
Location : rayland ohio
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