Help Opinions needed Nitrous Mishap
Help Opinions needed Nitrous Mishap I have a buddy with a 100 wet shot on his '03 Z06. Off the bottle, he made 438/397 and on the bottle, he made 538/612. We went to the track today and made 3 motor passes and 1 bottle fed pass.....After the pass on the bottle, almost at the end of the track, his check engine light came on and when he pulled up to park, the car was missing real bad...While rolling in the parking lot, the car was sputtering & missing, but there was no white or blue smoke coming out the tailpipes.. It sounded like the car was pulling major timing sputtering very bad..Well we got the car home and pulled the plugs, and the plugs were ok.....what do you think might have happened?
right now, we speculate he might have bent some valves and possibly flycutting some pistons.....We are taking the heads off tomorrow afternoon..
right now, we speculate he might have bent some valves and possibly flycutting some pistons.....We are taking the heads off tomorrow afternoon..
This is caveman method I use to find out if I bent or damaged a valve. I run the motor and put a piece of plastic up to the exhaust pipe. It will suck it in and push it back out if I have an exhaust valve bent. You can also here it making a low thumping noise through the exhaust when the engine is idling. Do a compression test on each cylinder before you pull it apart. It will tell you exactly which cylinders are hurt.
Don't pull the heads untill you are sure.
Do a compression test, and or leak down test. That will tell you if you need to pull them or not.
Do a compression test, and or leak down test. That will tell you if you need to pull them or not.
Originally Posted by c5_ls1_6spd
I have a buddy with a 100 wet shot on his '03 Z06. Off the bottle, he made 438/397 and on the bottle, he made 538/612. We went to the track today and made 3 motor passes and 1 bottle fed pass.....After the pass on the bottle, almost at the end of the track, his check engine light came on and when he pulled up to park, the car was missing real bad...While rolling in the parking lot, the car was sputtering & missing, but there was no white or blue smoke coming out the tailpipes.. It sounded like the car was pulling major timing sputtering very bad..Well we got the car home and pulled the plugs, and the plugs were ok.....what do you think might have happened?
right now, we speculate he might have bent some valves and possibly flycutting some pistons.....We are taking the heads off tomorrow afternoon..
right now, we speculate he might have bent some valves and possibly flycutting some pistons.....We are taking the heads off tomorrow afternoon..
TECH Apprentice
Joined: Sep 2004
Posts: 377
Likes: 0
From: Kona, Pearl Ridge
if the CEL came on what codes are listed in the DIC? a compression test will tell you if you bent a valve. just be sure to hold the gas pedal to the floor so the car thinks your venting out a flooded motor and you dont wash down the cylinders with fuel when you do 8tests.
