[donnyg]

I noticed today when I started up my Jeep that there was a knocking noise that sounded like it was coming from under the PCV filter under the valve cover. I never noticed it before and I installed a Howell TBI last week. I don't know if one has to do with the other. It is a steady knocking. Any ideas what it might be. It is a 4.2L 258 in my '87 YJ. The engine has about 90,000 miles on it. Is this the first signs of trouble? Thanks for the advice in advance.

Donny

1987 YJ 258 I6, 5 Speed, TFI Upgrade, MSD 6A, TFX Exhaust, Smitty Sure Steps, Howell Fuel Injection1999 Cherokee Sport, Stock

 

[donnyg]

What does that mean? Is it something I can diagnose on my own or should I take it to my mechanic? Is it ok to drive the Jeep like that or will I cause damage?

Thanks.

Donny

1987 YJ 258 I6, 5 Speed, TFI Upgrade, MSD 6A, TFX Exhaust, Smitty Sure Steps, Howell Fuel Injection1999 Cherokee Sport, Stock