i have a 70 mach 1 that has a very noticeble misfire. only at idle though. engine was rebuilt 10,000 miles ago. just put new carb. new plugs, wires, cap and rotor, points(they ve been adjusted correctly), and i ve done a compression test and everything is perfect. it runs fantastic when i drive it but only at idle does it have that darn misfire!!! help!!
2007-07-20 06:44:13 · 8 answers · asked by buickwc67 1 in Cars & Transportation ➔ Maintenance & Repairs
all you morons were wrong.....the engine had a mild cam in it.
2007-07-20 09:52:12 · update #1
all you dorks were wrong.....the engine had a mild cam in it.
2007-07-20 09:52:29 · update #2
Was there a misfire before you did the tune up? How frequent is the misfire? If it is every time a certain cylinder fires, it could be a rocker arm not adjusted properly. I've also had cars with a small exhaust leak that sounded like a slight miss.
2007-07-20 11:58:23 · answer #1 · answered by kujo 3 · 0⤊ 0⤋
What was that article now... Inductive cross fire on ford if I'm not mistaken. The gist of it was that consecutive firing plugs must maintain a certain distance between the wires especially if running parallel to each other. The article was for Fords but applies to most cars. Bottom line was use plug wire holders and separate consecutive wires in firing order. If all else has failed ,maybe this might help.
2007-07-20 21:12:09 · answer #2 · answered by David S 5 · 0⤊ 0⤋
It may be in the idle circuit of the carburetor. The mixture is either too lean or rich. good luck.
2007-07-20 13:50:15 · answer #3 · answered by Fordman 7 · 1⤊ 0⤋
at night open the hood and look for a spark..
that thought occurred to me.. but i assumed you were intelligent enough you would have mentioned a big cam..
i was wrong !
2007-07-20 13:49:31 · answer #4 · answered by Anonymous · 0⤊ 0⤋
whats a mild cam have to do with a miss?
2007-07-20 21:05:24 · answer #5 · answered by mister ss 7 · 0⤊ 1⤋
check for a vacuum leak they will mimmic a misfire.
2007-07-20 13:48:48 · answer #6 · answered by moe h 4 · 1⤊ 0⤋
you could have a defective plug or wire.
2007-07-20 13:47:15 · answer #7 · answered by julie 5 · 0⤊ 0⤋
the timing is wrong
B.
2007-07-20 14:00:15 · answer #8 · answered by ivan dog 6 · 0⤊ 0⤋