msd question

[dbn04]

hi,
yesterday i put a MSD pro billet distributor in my car, 5.o ltr efi, car was running fine with standard dist but now breaks up at about 4 k rpm, idles fine and double checked timing. also put new coil and spark plug wires. any thoughts on what could cause this?

thanks in advance for any replies.

[lovehamr]

Check the center electrode contact inside the dizzy cap. Should be carbon but nice and smooth as well as spring loaded. Also take a look at the rotor contact point for the center electrode and for signs of arcing in the cap.

Just a known place to start. Steve

[marco246]

Check out the rev limiter.

[Silverback51]

MSD is very sensitive to voltage input.

The first time I had an issue I replaced everything in the system. Found out it was the voltage regulator. Put in a new one and all was fine.

[Gaz64]

5.0 EFI? Could be a distributor signal mismatch with the ECM.

[Mac VABCH]

Check the TFI module on the front of the distributor and the connections at the coil.... The TFI needs to have dialectric compound on the back...

[DAVID GAGNARD]

Originally Posted by Gaz64

5.0 EFI? Could be a distributor signal mismatch with the ECM.

That's what I was thinking..........maybe check on the FFR forum and see what you can come up with.........

David

[dbn04]

thanks for the replys guys, shall check all out.