FiTech with MSD ignition
I was asking a Jegs rep questions about a new distributor and I told him I was running FiTech with MSD. He asked if anyone at FiTech talked to me about running their EFI with MSD ignition. I said no. Then I called MSD and they said FiTech has an issue with MSD and that I should remove the tack wire from the tack. I will try that fix tomorrow. Has anyone else had issues running a MSD off road ignition with a FiTech 400 HP 30003 system?
What MSD products are you using.
Hi Austin,
I HAVE RUN THIS BOX IN A 68 BRONCO FOR MORE THAN 10 YEARS AND IT HAS GIVEN GOOD SERVICE.
MSD 6 OFFROAD IGNITION
Thanks for your reply,
Keith Raffel
Lots of things that can cause issues here. Need to understand your build and entire ignition system.
I run 6al boxes with MSD coils and wires on all my builds. No issues.
Hi Austin,
1968 Bronco, 4 speed top loader transmission
Engine: 1969 351 Windsor, mild cam, built for bottom end torque
FiTech 30003 400 HP with Command Center - sent back to factory, unable to input data into Hand held
throttle body and hand held returned, unit appears to function properly, accepted 8 cylinder, 351 ci etc.,
Command Center seems to operate properly but displays 0 RPM when cranking engine, no start.
Ignition: MSD Offroad ignition (primary), Jacobs Ultra Coil,
Jacobs Electronic Ignition (backup), Jacobs Coil
Ignition System Transfer Switch
Ford Duraspark Distributor (large cap, Pertronix magnetic pickup purchased per suggestion from FiTech)
MSD Ignition Wires (8 mm silicone)
Main fuel tank, 2 saddle fuel tanks
Fuel Valves (electric), 3 each feeding Command Center fuel pump
Carter Electric Fuel Pump (main tank) this pump is constant on, Command Center is wired to this circuit
Dual batteries - starter and auxiliary connected when starting engine
I can't think of anything else that might impact the EFI.
Keith
Ok, let's put the ignition system to the side right now.
No RPM when cranking. One of or both things could be happening.
1. White wire not staying above 11v during cranking. I have seen Ford users try to attach the white wire to the starter solenoid. That does not work. Make sure you white wire stays hot and above 11v during crank.
2. Which pertronix module did you get? Fitech will not work with the Flame Thrower 3. 1 and 2 work. You must get RPM during crank for injectors to fire. Couple things to check. Pull a plug wire and check for spark during crank. If you have spark, take the Blue wire lead and tap on the positive battery terminal. You should see an RPM signal when tapping. If both check out, there is a connection problem or the distributor does not produce enough amps to trigger the Blue wire.
Checked the white wire, it registered 12.8 volts.
The Pertronix module must be a 1, it was the least expensive. The box doesn't say 1, 2, or 3.
I found 2 issues that might be causing a no spark condition from the MSD ignition. The big plug was loose, when I moved wires it made a buzzing sound. Also found a partially burned wire from the ignition to the alternator. Made both fixes, still no spark. Checked the resistance of the coil, checked out OK. Ran tests on the MSD box, did not check OK. Called MSD, rep told me to return the box and they would repair it. I'm about ready to purchase a new MSD ignition and coil.
Keith Raffel
Quote from Keith Raffel on September 26, 2019, 12:48 pmChecked the white wire, it registered 12.8 volts.
The Pertronix module must be a 1, it was the least expensive. The box doesn't say 1, 2, or 3.
I found 2 issues that might be causing a no spark condition from the MSD ignition. The big plug was loose, when I moved wires it made a buzzing sound. Also found a partially burned wire from the ignition to the alternator. Made both fixes, still no spark. Checked the resistance of the coil, checked out OK. Ran tests on the MSD box, did not check OK. Called MSD, rep told me to return the box and they would repair it. I'm about ready to purchase a new MSD ignition and coil.
Keith Raffel
While you are turning the engine over? That's incredible! Never heard of having that much voltage during cranking. Congrats!
just fyi I ran a msd 6a,l and now a summit box, a 3 step, blaster 2 coil, Taylor 8.8 wires, billet distributor, with a msd pickup coil, monster tach, my blue wire is unshielded, no issues
Quote from taylorteamracing on October 4, 2019, 11:10 amjust fyi I ran a msd 6a,l and now a summit box, a 3 step, blaster 2 coil, Taylor 8.8 wires, billet distributor, with a msd pickup coil, monster tach, my blue wire is unshielded, no issues
Just to clarify, were you running the MSD box before and not now? If so, did you have problems before and not now?