I have tf tw heads and got the autolite 3924 plugs. Are they pregapped, or do i still gap them to .054?wickedly stupid question
- Thread starter MysticKeith50
- Start date
I have tf tw heads and got the autolite 3924 plugs. Are they pregapped, or do i still gap them to .054?-
Sponsors (?)
stang302v8
New Member
sorry, i dont have the answer to that question but i was wandering, do u have to use those specific plugs? i bought a pair but my motor isnt ready yet, so i havent ran it with the tw heads on. if u have ran ur car with them already, what do u think of them( performance wise)?
yes i was told by tf to use them.....I am just having a little idle problem at cold.....I am going to check tps, iac, and just thought to ask this about the plugs.
95Vert
New Member
Iggyshane
New Member
i allways think its better to check rather then doing something twice. plus it only takes 30 seconds to check all the plugs.
95Vert
New Member
Since you're running bigger heads and all, I can't say for sure. But try gapping them at .054 since you're having some idle issues.
hmmmm...lets say hypothetically all the plugs were at .038 to .039 could that be my problem with my cold start idle?
MysticKeith50 said:
No.
Let me guess.. You start it up cold and it wants to stall and die. You have to keep your foot in it for the first few seconds to keep it running, right? Its simple to fix with a tuning device. I had that problem once. Its a cold start lean issue.
94gts
Member
why are the gap numbers so high?
my gt40 iron headed/nitrous set up i had stock replacement autolites at .035. I know that with a power adder the gap is lower but out of the box i think they are .044
my gt40 iron headed/nitrous set up i had stock replacement autolites at .035. I know that with a power adder the gap is lower but out of the box i think they are .044
Mine are gapped at .045. With iron heads .054 is recommended by Ford but with Autolite 24's.
Your idle hunt is not from the gap. Too much fuel usually causes cold start idle issues. The ECC dumps more fuel at cold start up's. I had the same issue with the Pro-M bullet meter and 24# injectors. Tuning is the best cure. However play with fuel and timing settings until its tolerable.
Your idle hunt is not from the gap. Too much fuel usually causes cold start idle issues. The ECC dumps more fuel at cold start up's. I had the same issue with the Pro-M bullet meter and 24# injectors. Tuning is the best cure. However play with fuel and timing settings until its tolerable.
legalize420
Active Member
VibrantRedGT said:
Actually, from what I have experienced, once you get into bigger injector and maf combo's the eec doesn't add enough fuel on cold starts. This is why adding cold compensation fuel through our PMS's fixed our cold start issues.
Hot starts are where the eec dumps too much fuel. And pulling out cranking fuel in our PMS's fix that too
Grn92LX said:Actually, from what I have experienced, once you get into bigger injector and maf combo's the eec doesn't add enough fuel on cold starts. This is why adding cold compensation fuel through our PMS's fixed our cold start issues.
Hot starts are where the eec dumps too much fuel. And pulling out cranking fuel in our PMS's fix that too
My car seems to be the opposite then. In the morning it surges. I take fuel out with the PMS and the hunt will stop.
Similar threads
