This is topic Misfire at 5000 rpm in forum Tech Talk at Northern California Ford Owners  .


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Posted by 90hogg (Member # 5313) on :
 
Just got fine tuned. Had a misfire at 4500 rpms. Was told to change Autolight spark plugs 3924's to 3926's (colder). The problem still occurs but now at 5000 rpms. Any help would be appreciated.
 
Posted by svfreerider87 (Member # 5748) on :
 
maybe an aftermarket ignitio IE: a crane or msd unit. Perhaps your ignition is running out of juice above 5k? what's your setup?
 
Posted by 90hogg (Member # 5313) on :
 
MSD dist, blaster coil, wires. Have Mallory Hyfire 6AL and MSD blaster 2 coil but not installed it was for another stang of mine. I have a MSD 6AL 2 on the way from Summit.
 
Posted by svfreerider87 (Member # 5748) on :
 
slap in a stock distributer and install the msd unit. see how that works.
 
Posted by welch93lx (Member # 8748) on :
 
i had the same f@#i thing.i change everything,and it was just the cap. damm i was mad lol
 
Posted by 166 Merlot (Member # 1549) on :
 
what kind of heads are you running and whats ur combo look like?
 
Posted by warhorse58gt (Member # 7702) on :
 
what plug gap you running?
 
Posted by 87GTCOBRA (Member # 7845) on :
 
GET RID OF THAT MSD DIS!!!!!!! bro i been having a miss fire in mine for like a month i change the coil spark plugs tfi messed with the air meter cleaned the aic unit nothing worked! so i took out my msd dis and put in the stock one and the the mother fucker run tits now!
 
Posted by 92stangLX (Member # 3252) on :
 
quote:
Originally posted by welch93lx:
i had the same f@#i thing.i change everything,and it was just the cap. damm i was mad lol
+1 My rotor was jacked up. When I changed the cap and rotor everything was cool
 
Posted by SHORTSHIFTER89 (Member # 7810) on :
 
i agree with 87gtcobra i had the same problem with them damm msd dis aint worth the $200 buck. i went with the accell and bamm everthing runs great now i went threy 2msd dis in 1 1/2 years im threw with them. stock or accell is the key. i had the msd dis blaster coil wires waste of money.
 
Posted by 90hogg (Member # 5313) on :
 
I installed the Mallory Hyfire 6AL, Accel Coil and changed the cap. Problem still exists at 5500 RPMs. I will swap distributors as soon as I get my hands on a stock one. My heads are Twisted Wedges and my plug gap is 54. Thanks for the help thus far!

[ January 14, 2009, 07:01 PM: Message edited by: 90hogg ]
 
Posted by 95331StrimVert (Member # 6250) on :
 
close the gap...
 




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