cold start engine knock
#1
cold start engine knock
2007 gt500 with 4800 miles. first start of the day in my garage i can hear a faint knock. its not loud and you couldnt hear it inside the car if i started it outside the garage. you can hear it if you get out the car though. i hear it from the bottom of the oil pan. no knock on top of the engine. completely stops once the needle starts to move on the temp gauge. i run the correct motor oil and oil filter also. car runs great and no other problems. anyone else hear this with their car???????
#2
I had a strange knock in my 08 at one time...turns out the cats were falling apart and when warming up the ceramic was popping...the end result was a blast of white dust blowing out the exhaust at WOT...what caused this... the guy I bought the car from just put 558 miles on it idling around...unburned gas was getting into the cats and burning...causing much higher temps then the ceramic is made for...(a rich A/F mixture can cause this also)
Thread
Thread Starter
Forum
Replies
Last Post
ShaneB26154
4.6L (1996-2004 Modular) Mustang
35
03-04-2021 04:05 AM
panic
S550 2015-2023 Mustang
0
08-25-2015 09:34 AM
HIS S-197
4.0L V6 Technical Discussions
1
08-10-2015 05:47 PM