miss. in eng
 

hear the story. 1st run of the day it will mjss at the top of each gear. then be good all day. changed plugs wires cap and rotor and still the same.
has anyone seen this before?
motor-468ci, 13:1, tran-400 car-3500lb

Re: miss. in eng
 

I had an issue once I added an exhaust system to my camaro only to find out I had the wrong plug for the merlin head. I know it's a long shot but also check the pill in the rev limiter.

Re: miss. in eng
 

try pulling the chip and did not change. what weard is it was fine be for the winter now on the first run for the day it miss. than no more problem for the rest of the day

Re: miss. in eng
 

to much fuel bleeding into the engine while sitting for extended time?? Takes a good hard pass to clean it out/???

no clue just a thought

Re: miss. in eng
 

I always shut off the fuel pump and clear the carb after each race. This makes sure I have no fuel left in the carb as I was having the same problem in my bracket car. Seemed to fix the problem

Re: miss. in eng
 

If car is sitting in a way that the carb is below the tank or cell with no shut on fuel line; the gas will bleed into the engine. ???

Re: miss. in eng
 

Do you leave the water in it or drain it out? If you leave water in radiator and motor you may have a head gasket weeping, after 1st run cylinder clear.

Re: miss. in eng
 

What's the battery voltage before the first pass?

Re: miss. in eng
 

battery volt is over 13v and i do have water in it all the time but have not had to add any. i will try the fuel shut off next weekend and see how it work if have problem will dump water and see how that works.

Re: miss. in eng
 

I once had a cracked coil that acted like that, when it cooled off at night it apparently took in moisture in the crack and when it warmed up it purged the moisture and ran fine.

The crack was so fine it was almost invisible. Changed the coil and the problem was solved.

Re: miss. in eng
 

Man it sure sounds like plugs.I know you changed them.Might try another set different brand. Also check for moisture/condensation inside the dist cap and the plug wire sockets.Do you keep the car outside?

Re: miss. in eng
 

stay in enclosed trailer same as it did last year

Re: miss. in eng
 

will i can say that it is not fuel problem.will try new coil and plug next weekend

Re: miss. in eng
 

Pat Collins ( TechWest Racing Services ) is right on regarding loose or oxidized connections to the coil / MSD ; been there done that . It may not be the problem in this case , but is good advice for any racer.