ZR-1 Net Registry Forums - View Single Post - New ZR-1 owner...no start

Jalisurr · 10-18-2015

Hey folks,

So I recently got my new (to me) 1990 ZR-1, and it worked fine for a couple days, then today as I was driving, the engine suddenly died, like someone had turned off a lightbulb, no stumbling, nothing. Now it will crank but not start.

I can hear the fuel pump prime, and it won't start at all, so I don't think it's that the primary fuel pump has failed.

I tested spark and found that most of the spark plugs had spark but I couldn't get anything out of 2 of them. So my guess is that one of the coil packs has gone bad? Is the LT5 a high enough compression motor that it won't fire at all with one bad coil pack?

Just looking to confirm my suspicions before I go tearing into the thing. Those coils are buried way in there.

10-18-2015	#1
Jalisurr Join Date: Jul 2015 Location: Vancouver Posts: 22	New ZR-1 owner...no start Hey folks, So I recently got my new (to me) 1990 ZR-1, and it worked fine for a couple days, then today as I was driving, the engine suddenly died, like someone had turned off a lightbulb, no stumbling, nothing. Now it will crank but not start. I can hear the fuel pump prime, and it won't start at all, so I don't think it's that the primary fuel pump has failed. I tested spark and found that most of the spark plugs had spark but I couldn't get anything out of 2 of them. So my guess is that one of the coil packs has gone bad? Is the LT5 a high enough compression motor that it won't fire at all with one bad coil pack? Just looking to confirm my suspicions before I go tearing into the thing. Those coils are buried way in there.