Hi,

I hope someone can help. I have been around Honda's for over 15 years now and have come across a wierd problem with my 97 GSR.

The #3 cylinder reads about 150-200 degress hotter than any of the other three cylinders, even at idle. I get the temp by using a infrared thermometer on the header.

The car blew a bone stock GSR motor @ 125k, and I am the second owner since 88k. No mods, all stock, and the original owner just ran it as a commuter. Wierd or what?

It is an OBD2 car. I have swapped inj between cyls, and even repinned #3 & #4 at the ECU and ran the inj plug from 3 on 4, and the high temp continues.

The old motor had a ton of carbon on the inside of #3 and burned an exh valve.

Any ideas?

I did try an OBD1 computer, and no difference...

HELP before this nice low mile H-motors JDM motor pops too!