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Backfire on idle only

2K views 6 replies 4 participants last post by  xf351gt 
#1 ·
Gday all, ive just recently got me car up and running again after donating $200 to the international carby mechanics fund and ive hit a problem. It is that (hot or cold) the car runs fine when revving and what not, but when idling, it seems to backfire... quite a bit

now im not sure if it was doing this before as its a recent acquirement and, well yeh.

anyone got any suggestions?

btw its a 351 with a 650dp

cheers all
 
#2 ·
Check for inlet leaks a compression test to check for bent valves or burnt, damaged valves.Plugs/ leads and timing perfect??
 
#6 ·
TTN, yes it is only doing it when sitting there but come to think of it, xf is right, its more of a popping sound than anything, i think i will check the valves when i can....

just as an off note, will it be a bad thing to continue using, ie will it do mor damage?
 
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