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Why 2 knock sensors on the L67?


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Posted

I guess I could really care less, but I just finished installing the new fucking engine in my car and I couldn't find where this one wire went. Well, it turns out that this wire went to a knock sensor that someone had fucking busted off the threads inside the block. So now I'm forced to drill the thing out unless you guys can tell me I only need the one in the rear, but I'm assuming there are two for a reason and I'll be drilling that thing out tomorrow. Fuck.

Posted

You need to plug it in or you'll get an SES light for sure, among other problems.

Posted

You need to plug it in or you'll get an SES light for sure, among other problems.

 

That is what I figured. I guess I better find my easy outs then.

Posted

Well just to see if it ran I left it unplugged and it did not pop any codes. However I got it in now and I must say, the L67 runs a lot better without a spun bearing and a burnt exhaust valve on cylinder #2 :burnout:

Posted

Is the crack the 'burn'?

 

The exhaust valve is the bigger one sweety :lol:

 

Sorry, I had to haha

Posted

Is the crack the 'burn'?

 

The exhaust valve is the bigger one sweety :lol:

 

Sorry, I had to haha

 

Really?

Posted

Is the crack the 'burn'?

 

The exhaust valve is the bigger one sweety :lol:

 

Sorry, I had to haha

Really?

:facepalm: no...

Posted

Is the crack the 'burn'?

 

The exhaust valve is the bigger one sweety :lol:

 

Sorry, I had to haha

Really?

:facepalm: no...

 

Didn't think so!

Posted

I was about to say, I went out and checked that head again and everything and yeah, it is the exhaust valve. My e-cred was almost destroyed there, close call :lol:. And am I the only one who calls that a "burnt" valve around here?

Posted

I was about to say, I went out and checked that head again and everything and yeah, it is the exhaust valve. My e-cred was almost destroyed there, close call :lol:. And am I the only one who calls that a "burnt" valve around here?

 

It's cracked, right?

Posted

Yes it is cracked, bad, but that cracking is usually caused by overheating, therefor it is called a burnt valve.

Posted

Intake valves are always the bigger one because you need a bigger area for air to be sucked in. Exhaust valve can be smaller because the exhaust is being pushed out by the piston - so it's going out one way or another.

Posted

Intake valves are always the bigger one because you need a bigger area for air to be sucked in. Exhaust valve can be smaller because the exhaust is being pushed out by the piston - so it's going out one way or another.

 

the fact that the exhaust gases are still expanding when the valve starts to open helps as well.

Posted

Yes it is cracked, bad, but that cracking is usually caused by overheating, therefor it is called a burnt valve.

 

Gotcha

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