....Ill check when I go back in...
Need some ideas please
Thread Starter
Burning Brakes
Joined: Aug 2010
Posts: 924
Likes: 10
From: Manteca Calif
Need some ideas please
I had a water pump fail awhile back and decided to replace other parts while i was in there, so water pump, opti, coil, wires, plugs, timing chain set, fired right up drove 5 miles stumbled and died, had to be flatbeded home, I thought it was the icm , bought a GM one and still no go, Im getting spark at the coil but not at the plugs, does it sound like the opti? BTW all MSD parts. Anything else I should check before I tear it back down and sent opti back ? 92 with 97K miles 
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
I had a water pump fail awhile back and decided to replace other parts while i was in there, so water pump, opti, coil, wires, plugs, timing chain set, fired right up drove 5 miles stumbled and died, had to be flatbeded home, I thought it was the icm , bought a GM one and still no go, Im getting spark at the coil but not at the plugs, does it sound like the opti? BTW all MSD parts. Anything else I should check before I tear it back down and sent opti back ? 92 with 97K miles
You didn't expect them to send it with them tight did you?
At the 1 buck and labor they really don't care....
If you are lucky the screws came out and the rotor fell off if not might as well order the cap and rotor and just return what you do not need.
If you are lazy as I can be at times the tools are still out and ready to go..
Dave
Racer
Joined: Oct 2006
Posts: 438
Likes: 14
From: Tucson/Santa Paula AZ/CA
2017 C4 of Year Finalist
I had a water pump fail awhile back and decided to replace other parts while i was in there, so water pump, opti, coil, wires, plugs, timing chain set, fired right up drove 5 miles stumbled and died, had to be flatbeded home, I thought it was the icm , bought a GM one and still no go, Im getting spark at the coil but not at the plugs, does it sound like the opti? BTW all MSD parts. Anything else I should check before I tear it back down and sent opti back ? 92 with 97K miles
Just an FYI but my buddy across the street went through two new defective MSD units for his CSX Cobra before he got a good one. They were direct from the factory. This was one month ago. Cap and rotor would be the next thing to check.
Mick
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
If you have a spark at the coil and not at the plug it is either the cap the rotor or all the plug wires..
Racer
Joined: Oct 2006
Posts: 438
Likes: 14
From: Tucson/Santa Paula AZ/CA
2017 C4 of Year Finalist
Mick
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
Thread Starter
Burning Brakes
Joined: Aug 2010
Posts: 924
Likes: 10
From: Manteca Calif
Well, just an update on my opti, I sent it back to MSD they fount it to have a bad sensor so they replaced it plus the cap, Im about to install it again but before i do, just woundering if there was somthing on enging side that could of caused the sensor to go bad, or just a bad sensor? Anything i should check? I don't want to r&r this again....thanks
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