fz14jp
Member
Bought a 2001 FZ1 about three weeks ago. I love this bike! Previous owner did not ride it much...it only has 3750 miles!!! Anyway, I did some routine maintenance, oil change plus filter, K&N air filter, and replaced the plugs. When I pulled the plugs, I was surprosed to find that they were ngk CR9ek plugs...not the stock CR9e. When I compare the length of these plugs to the stock plugs I found that they were about 1/8" longer than the CR9e's and were double tipped. I have since found out they are for specific Suzuki models...not the FZ1!!!! Now the bike runs terrible, misses at low rpm's, doesn't idle right and "gulps" with turning the throttle....especially from a stop and low rpm's. Idle runs up and down from 1100 to 1600 back and forth. I checked the ignition coils with an ohm meter (both primary and secondary ends and they are both within new spec's. I pulled individual caps and they are all getting juice. I'm not sure but could the carb's and throttle position sensore have been tuned for these other plugs??? I don't want to run anything else other than the stock (oem) ngk CR9e's. I love to avoid taking it in to a Yamaha dealer but I guess I have no choice unless someone here in the forum has a solution/idea I have'nt thought of. I'm also concerned that the plugs were wrong and were seated 1/8" deeper....I hope the pistons didn't get fried!!! I need help!!!! Thanks.