engine knock!!!
Thread Starter
2nd Gear Member
Joined: Jun 2009
Posts: 193
From: ca
Thread Starter
2nd Gear Member
Joined: Jun 2009
Posts: 193
From: ca
2nd Gear Member
Joined: Apr 2009
Posts: 314
From: Near China now...
The mechanic is an idiot. Just try and drive easily. If it's pinging under part throttle, there is something VERY wrong there. Put race fuel in it immediately. If it still pings (chain rattling sound), then you will need to pull the motor and pull it apart AFTER you do a compression/leakdown test because there is most likely something mechanically wrong. You could have a hole in a piston which would allow the AF mixture through the hole and oil mist into the chamber which means that cylinder would ping all to hell. Compression/leakdown is an immediate neccessity! But don't let the mechanic who told you your crank needs replaced to do it...he's just trying to rob you.
5th Gear Member
Joined: Jul 2006
Posts: 2,407
From:
take it to a performance shop if possible. specifically one whoe specializes in late model ford efi vehicles if you can. I would not trust a dealer or budget mechanic to tell me what is wrong on a car like that esspecially once it has been modded. It could be your timing but honestly i doubt it because most people don't even notice light pinging unless they are specifically listening for it. Seems odd that your avereage person would hear that noise unless it is masiivly detonating in which case its probably going to need major repair to the internals of the motor. are you 100% sure it is coming from the motor and not a baffle rattling in a muffler or something else?
Thread Starter
2nd Gear Member
Joined: Jun 2009
Posts: 193
From: ca
take it to a performance shop if possible. specifically one whoe specializes in late model ford efi vehicles if you can. I would not trust a dealer or budget mechanic to tell me what is wrong on a car like that esspecially once it has been modded. It could be your timing but honestly i doubt it because most people don't even notice light pinging unless they are specifically listening for it. Seems odd that your avereage person would hear that noise unless it is masiivly detonating in which case its probably going to need major repair to the internals of the motor. are you 100% sure it is coming from the motor and not a baffle rattling in a muffler or something else?
Thread Starter
2nd Gear Member
Joined: Jun 2009
Posts: 193
From: ca
The mechanic is an idiot. Just try and drive easily. If it's pinging under part throttle, there is something VERY wrong there. Put race fuel in it immediately. If it still pings (chain rattling sound), then you will need to pull the motor and pull it apart AFTER you do a compression/leakdown test because there is most likely something mechanically wrong. You could have a hole in a piston which would allow the AF mixture through the hole and oil mist into the chamber which means that cylinder would ping all to hell. Compression/leakdown is an immediate neccessity! But don't let the mechanic who told you your crank needs replaced to do it...he's just trying to rob you.
5th Gear Member
Joined: Jul 2006
Posts: 2,407
From:
compression tests are easy should not be too expensive to do. takes about 15 minutes on a 4V ford. you could probably get your self a tester and do it on your own. you probably want 2 people to do it though. one to watch the preasure gauge and one to crank the motor over.
