Issue with DLIDFIS system
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Joined: Nov 2016
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From: Louisville, KY
Issue with DLIDFIS system
Have been dealing with off and on issues with DLIDFIS. I keep blowing up the leading coils (std MSD coils), have been thru two sets; second set actually burst. Have change to high vibration MSD coils and gone back to stock system (tried to run with DLIDFIS and coils started getting warm). The distributor and wiring match a friends RX7. I am running a high output alternator but all measurements taking on system show within spec electrics wise. I have replaced a suspect MSD box with a new box, and it get signal but is not stable (light goes sometime goes solid). Set at 4 cylinder setting. Have switched J109s around. Have tach signal.
Any advice on where to look next for problem? Does anyone have a clear wire diagram or good drawing showing DLIDFIS the set-up.
Any advice on where to look next for problem? Does anyone have a clear wire diagram or good drawing showing DLIDFIS the set-up.
ancient wizard...
Joined: Sep 2014
Posts: 2,335
Likes: 262
From: Maryland
As t g mentioned,looking at ignition secondary starting with wires would be 1st step.
Have to ask why the need to run MSD ignition on top of DLIDFIS?
Properly wired/installed DLIDFIS is a reliable improvement over oe ignition .
Perhaps running DLIDFIS alone without MSD to separate the two systems to help diagnose and eliminate one source of potential problems.
Test your original Diamond coils 1st and use them instead of MSD ones. Should have approximately 3ohms on primary and 5k-8k on secondary and not leaking oil.
It is normal for any ignition coil to run warm to very warm.
I have used MSD components for years in modified ignition on muscle cars street driven and tracked and found them to be a worthwhile reliable upgrade. You must be diligent with maintenance on caps,rotors,plugs and wires as the extra current generated wears out these components at an accelerated rate. Should be using best quality ignition wires available to contain and convey that extra current to plugs.
Burning internals of even good ignition wires is not uncommon and can lead to drivability issues.
My experience with current MSD products has not been consistent,where they're made is a big part of this. QC issues,failures,particularly with their ignition coils are common. Those who state they have been running this equipment for a long time with no issue are likely using components that were assembled in this country before production shifted offshore.
Have to ask why the need to run MSD ignition on top of DLIDFIS?
Properly wired/installed DLIDFIS is a reliable improvement over oe ignition .
Perhaps running DLIDFIS alone without MSD to separate the two systems to help diagnose and eliminate one source of potential problems.
Test your original Diamond coils 1st and use them instead of MSD ones. Should have approximately 3ohms on primary and 5k-8k on secondary and not leaking oil.
It is normal for any ignition coil to run warm to very warm.
I have used MSD components for years in modified ignition on muscle cars street driven and tracked and found them to be a worthwhile reliable upgrade. You must be diligent with maintenance on caps,rotors,plugs and wires as the extra current generated wears out these components at an accelerated rate. Should be using best quality ignition wires available to contain and convey that extra current to plugs.
Burning internals of even good ignition wires is not uncommon and can lead to drivability issues.
My experience with current MSD products has not been consistent,where they're made is a big part of this. QC issues,failures,particularly with their ignition coils are common. Those who state they have been running this equipment for a long time with no issue are likely using components that were assembled in this country before production shifted offshore.
I used to run that sytem with a msd 6al. I found that two stock ignighters with two msd blaster coils worked better in wasted spark. Msd 6al only has a hot spark up to 3k rpm but in wasted spark its half that. Starts up good but any thing higher than idle msd 6al not doing much.
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