did some 1/8 mile today...first run she ran great but second and last run engine was cutting out during the run and picked back up at the end .....i have the msd 6 al,pro billet distrib,hvc11 blaster coil...earlier this year i replaced cap and rotor and noticed like rust and crap around the module....scraped and cleaned that....msd 6al is around 11 years old...distrib is around 6 years old....coil around 3 years old.....do you think its electrical??does the box when it goes bad does it go out and on or just die completely.....it was real hot today....over 100...the 6al was real hot to touch....yes its under the hood on front of the inner fender...the car is a 68 roadrunner...572 hemi
Posted By: MR_P_BODY
Re: engine cuts out - 08/17/09 12:20 AM
Number 1 thing would be getting the box out from
under the hood
this is a mostly street car....driven... its never done this before
Posted By: Bob_Coomer
Re: engine cuts out - 08/17/09 12:49 AM
Did you pull a plug and look for a misfire? Those Old MSD 6AL are tough as a piece of flat iron. When the go they go, personally never had one go bad.
Posted By: MR_P_BODY
Re: hemi cuts out - 08/17/09 12:52 AM
So far what have you checked
Posted By: Michael
Re: hemi cuts out - 08/17/09 12:59 AM
This so called gasoline we have today and that heat???? I wonder if that isn't your problem?
so far....i just got it off the trailer.....i can sit there and holder her at say 5grand and it dont cut out....i did watch the fuel pressure gauge run up to 9psi while holding the revs...its set for 6psi.....i know...should be 7.5psi....i am just looking for the possiblities
that mallory 250 electric fuel pump is 10 years old too
Posted By: MR_P_BODY
Re: hemi cuts out - 08/17/09 01:12 AM
When you say... cutting out... do you mean missing
pull your plugs and take a look, sounds like you dont
tune it up too often
brand new plugs ,new wires,cap,rotor,fuel filter....how about that rusted msd module that i cleaned up...it dont cut out reving and holding....when i said cutting out....like dead on her face dead ...then it would take off ... the track 116 degrees with my heat gun
i am going take it out for a ride in the morning and see what happens
Posted By: Hemiroid
Re: hemi cuts out - 08/17/09 01:30 AM
What fuel system is on it? If it's a mechanical pump it's probably vapor locking or boiling the fuel in the fuel line.
i am looking at 70dusterjohns post and was thinking the same thing and read on someones elses responce about the fuel cell foam breaking up...the launce and the foam blocking it up.....this is a old triangler 20 gallon cell which is say 10 years old...could be??
well i removed filter and tore it apart wasnt alot of stuff.....pulled the distributor cap and the stator is all rusted up with the pickup....is that normal heres some pics...
hers the filter crap..i guess this rules out the foam coming apart..still have to test the pump
this could be a problem too....should put the pump and filter under the pickup
i was just talking to my buddy and he heard my car popping like crazy as it went down the track....i shift at 6800 and the rev limiter is set at 7200..i have that dial job instead of the pills..so i am not running into that
the guy i was racing said it was poping like a machine gun....so this must ve been into the rev limiter and the tach was at 6800 when i went for second gear....so i have a feeling the msd6al is bad....i guess i am going to replace that and see what happens
