No North BAY for me. cuda still broke

greg73cuda

greg73cuda

Well-known member
ryan had the truck & trailer all packed & washed with hope of me having the cuda ready for a big race weekend in north bay.

started at 6:00 am removed edelbrock 800 & rpm intake & install 850 holly & TM7 intake. still missing.

replace 8 plugs. no change.

replaced power wire to 6al & checked grounds. no change.

borrowed & replaced MSD 6AL box. no change

took compression on several cyl 150 -155

checked valve springs.

yesterday replace ignition wires. alternator, voltage regultor & plug. cap & rotor look perfect.

played with timing over & over.

still misses & runs sputters under load. i just can't bring myself to race cuda in the shape. so we bailed on the trip. DANG.

Ron FF - thanks a million for all the help today bud. wish we had better news. we gave up at 4:30 & went home.

beer looks good now............................. [smilie=a: [smilie=a:

next race July 1st. gotta get this thing figured out..

next, full compression test, swap distributors & go from there

greg
 
Sorry to hear that Greg. I still think you should have a look at the fuel pump pushrod and fuel pump. It could very well be a fuel delivery issue.

Bob, hadn't heard of a tach causing problems with the msd....tell me about it, i'd like to hear your experiences on the subject.

Ron
 
did it. no change

thanks greg



maybe it the flux capacitor & i'm out of plutonium. danbit why didn't i think of that earlier

greg
 
Change the headlight fluid. If it gets old, it will cause performance issues and not just with the headlights - MOPAR electrical was a little quirky that way, ya know.
 
firefighter3931 said:
Sorry to hear that Greg. I still think you should have a look at the fuel pump pushrod and fuel pump. It could very well be a fuel delivery issue.

Ron
Click to expand...

Indeed. Have you checked the fuel pressure?
 
Its something so friggin simple that you dont see it. How did you test the valve springs? Read the plugs again. [smilie=e: [smilie=e: [smilie=e:
 
Da-ho said:
Its something so friggin simple that you dont see it. How did you test the valve springs? Read the plugs again. [smilie=e: [smilie=e: [smilie=e:[/quote]

visual inspection only at this point. thought it might be a stuck hydraulic lifter floating.

greg
Click to expand...
 
how is the fuel presure..and do you have a tank sock pickup still?..if so how old is it?

is your MSD mounted to the body or insulated from the body....ive run into several that would run "odd" if they were direct body mounted..had to mount mine up on nylon bolts
 
firefighter3931 said:
Bob, hadn't heard of a tach causing problems with the msd....tell me about it, i'd like to hear your experiences on the subject.
Click to expand...

It wasn't MSD specific, I run the po-boy orange box.

Anyway, out of the blue my car had a weak spark and wouldn't start. I spent a week or more trying this that and the other. For some reason I pulled the cluster out, I guess to see if it was shorted, and in the process I unplugged my tach and took it off the column. Out of the blue, the car would start. Hooked the tach back up, no start.

I guess the tach had a short in it. Made me feel like a real maroon, I'm telling ya. Me and my aluminum ball bat took that tach for its last ride though, so at least that was fun.
 
i've got about 50 passes on the MSD set up. its mounted to the firewall on rubber mounts but steel bolts.

measuring fuel pressure is one of my next moves too. i've never pulled the tank since i've owned the car (about 7 years). electric fuel pump, regulator, guage & a fuel cell are on the list of things to install someday. maybe sooner than expected if its a fuel issue.

thanks

greg
 
greg73cuda said:
i've got about 50 passes on the MSD set up. its mounted to the firewall on rubber mounts but steel bolts.

measuring fuel pressure is one of my next moves too. i've never pulled the tank since i've owned the car (about 7 years). electric fuel pump, regulator, guage & a fuel cell are on the list of things to install someday. maybe sooner than expected if its a fuel issue.

thanks

greg
Click to expand...

There has to be a ton of sediment/scale inside that tank. If the fuel lines are stock they will be 5/16 diameter (original 340 car)....you should run 3/8 for this type of application.....but a 5/16 line will work up to 500hp with a good fuel pump. The Carter HV mechanical is plenty but i would suggest you start with the fuel filter. It could be clogged and restricting flow. Wouldn't that be something if a fricken fuel filter was causing all this grief !!! [smilie=e:

The tank should be dropped for a look see and some preventative maintenance. Have a look at the sock on the pickup. I'll bet it's a mess.....

Run some air through the fuel line and blow it out while you're at it. Rust or scale could have broken off inside the fuel line and is now restricting flow. Good luck man, this has to be frustrating ! [smilie=e:

Ron
 
firefighter3931 said:
b-body-bob said:
Me and my aluminum ball bat took that tach for its last ride though, so at least that was fun.
Click to expand...

:D Been there Bob ! So, did ya hit it out of the park ? Home run ? [smilie=r:

[/quote]

I sprayed the entire infield with shrapnel from the plastic P.O.S. [smilie=e:
Click to expand...
 
frustrating indeed. i'm taking this weekend off since we didn't go to north bary & spend a little quality time with lori. if i can't figure it out by tuesday early AM i'm sending cuda out for others to look at. i'm tied up all day wednesday & thursday in business meetings & i'm suppose to race on friday Canada day pro-mod weekend at luskville. my shop is really busy too & i don't know how much time we can spend on it.

greg
 
im going to bet the tank has never been droped...ever and that the sock is totaly pluged up...dont let a fuel preasure test fool you on this cause a sock problem will show correct fuel presure(useualy) as its not a preasure issue but flow

if you do upgrade the fuel lines dont forget the tank pickup line as it will be 5/16 as well
 
mondays job list.

removed fuel intake line before pump & rigged up a hose, sucked 110 octane right from a can to bypass tank, pick up, sock & filter.........still missing.

removed valve covers & rocker assemblies. inspected springs & push rods. nothing broke or bent..... still missing after assembly.

tuesday job. 1-replace new MP distributor with my spare 80 buck jobber & try. if it still misses 2- rig an inline fuel pressure guage after my mechanical pump to make sure i've got at least 7 psi. (don't think its a problem but i have to check)

3rd- car goes to an ignition specialist & an old scope check to start.

boy you miss a few weeks racing & do you ever drop off in the points. we've dropped to 9th place. chit.

greg73cuda
 
I had an old demon once that shot ducks and it fought me for quite a while. It was a valve spring. You need to compress them with a fulcrum type tool to get a good idea of spring pressure. If its noticeably weak you should be able to feel it. [smilie=e:
 
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