engine knock/low compression
boss2222
03-18-2008, 08:32 AM
can anyone help me out with a 98 sl1 there is a bad knock in the engine.
when you first start it it smokes bad for about 1 minute then stops smoking however knock doesn't stop. knock is fairly loud ( not a lfter tick by all means ) once in while the knock will stop for a minute or so. I did a compression test and #2 is at 150 lbs while the other 3 cylinders are at 195-200. also the #2 spark plug was oily. I was wondering if it could be a valve noise or hoping it wasn't a rod knock. anyway easy to tel the difference. thank you
when you first start it it smokes bad for about 1 minute then stops smoking however knock doesn't stop. knock is fairly loud ( not a lfter tick by all means ) once in while the knock will stop for a minute or so. I did a compression test and #2 is at 150 lbs while the other 3 cylinders are at 195-200. also the #2 spark plug was oily. I was wondering if it could be a valve noise or hoping it wasn't a rod knock. anyway easy to tel the difference. thank you
RC1488
03-18-2008, 02:40 PM
can anyone help me out with a 98 sl1 there is a bad knock in the engine.
when you first start it it smokes bad for about 1 minute then stops smoking however knock doesn't stop. knock is fairly loud ( not a lfter tick by all means ) once in while the knock will stop for a minute or so. I did a compression test and #2 is at 150 lbs while the other 3 cylinders are at 195-200. also the #2 spark plug was oily. I was wondering if it could be a valve noise or hoping it wasn't a rod knock. anyway easy to tel the difference. thank you
Yes. however i cant really help :/
Go to saturnfans.com
register and post your question in the s-series Tech section.
Ill see you there :)
when you first start it it smokes bad for about 1 minute then stops smoking however knock doesn't stop. knock is fairly loud ( not a lfter tick by all means ) once in while the knock will stop for a minute or so. I did a compression test and #2 is at 150 lbs while the other 3 cylinders are at 195-200. also the #2 spark plug was oily. I was wondering if it could be a valve noise or hoping it wasn't a rod knock. anyway easy to tel the difference. thank you
Yes. however i cant really help :/
Go to saturnfans.com
register and post your question in the s-series Tech section.
Ill see you there :)
Automotive Network, Inc., Copyright ©2026
