It started three days ago... I was coming home from a friend and I heard a knocking from my engine bay. "Fuck" I thought. I popped the hood and listened. The knocking was gone. I was still scared.
I checked the oil level, even though I knew what the result would be.... Full, perfect.
The knocking didn't show itself again until tonight. I was on my way to my parents house to say goodbye to my little brother who's leaving to travel France for a month. I roll up to a stop light and see a buddy in his grand am... we chat at the stop light then go at the green. Just a normal accell until he tries to out run me... hehe, no way dude! I wrap out 2nd then let off... no biggie.
As I roll up the driveway to my parents I hear the dreaded clanking again... I jump out really fast and try and find where its coming from... the front of the head is the culprit.
I shone my flashlight all over trying to 'see' where the noise was coming from... it appears to be in the area in front of the 3rd cylinder.
I went inside to say goodbye and when I came out the noise was no where to be heard. This same thing happened when the noise first came to be... it was there, then just as fast... gone.
The head was just completely gone through, new seals, everything checked by a reputable engine shop in Spokane. The engine has 1850 miles on it. Intake, Exhaust, VPC, E01@11PSI are the only mods I have. AFR is perfect all around... the only thing worth noting is sometimes I will cruise around 16 instead of 14.7 but only sometimes.
Any input on what could cause this nasty noise? I am concerned for my poor, poor, fresh engine.
Two More Pieces of Relevant info:
The sound increases speed with engine RPM
Compression is +/-3 @ 155 all across the board.
What are the chances a valve is stuck halfway open, and the cam is hitting the bucket making this noise?
I checked the oil level, even though I knew what the result would be.... Full, perfect.
The knocking didn't show itself again until tonight. I was on my way to my parents house to say goodbye to my little brother who's leaving to travel France for a month. I roll up to a stop light and see a buddy in his grand am... we chat at the stop light then go at the green. Just a normal accell until he tries to out run me... hehe, no way dude! I wrap out 2nd then let off... no biggie.
As I roll up the driveway to my parents I hear the dreaded clanking again... I jump out really fast and try and find where its coming from... the front of the head is the culprit.
I shone my flashlight all over trying to 'see' where the noise was coming from... it appears to be in the area in front of the 3rd cylinder.
I went inside to say goodbye and when I came out the noise was no where to be heard. This same thing happened when the noise first came to be... it was there, then just as fast... gone.
The head was just completely gone through, new seals, everything checked by a reputable engine shop in Spokane. The engine has 1850 miles on it. Intake, Exhaust, VPC, E01@11PSI are the only mods I have. AFR is perfect all around... the only thing worth noting is sometimes I will cruise around 16 instead of 14.7 but only sometimes.
Any input on what could cause this nasty noise? I am concerned for my poor, poor, fresh engine.
Two More Pieces of Relevant info:
The sound increases speed with engine RPM
Compression is +/-3 @ 155 all across the board.
What are the chances a valve is stuck halfway open, and the cam is hitting the bucket making this noise?
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. Valve ticking maybe?