Valve adjustment
Valve adjustment
Hello guys, I'm having an issue where my engine misfires upon a cold start up. As I get it to operating temp, it goes away. We all know metal expands when heated. I'm starting to think that my valve adjustment is out of spec. I searched but I can't find any info on valve adjustment on our engines. Anyone can help me out on this?
Driver
Joined: Oct 2013
Posts: 194
Likes: 1
From: VA
Are you losing coolant too? Rough running on the first cold start of the day is often a sign of a leaking head gasket. Water gets in the combustion chamber and the engine runs rough till it's all blown out the exhaust. You typically see what smoke and might smell burning anti-freeze too.
When the engine is cold, the valves should be at max clearance I'd think. Then get tighter as the engine heats up. Meaning I'm not sure your theory is true.
When the engine is cold, the valves should be at max clearance I'd think. Then get tighter as the engine heats up. Meaning I'm not sure your theory is true.
Valve adjustment is $600 + at the dealership, I had mine done last year, I heard mine when the engine warmed up and it never triggered a misfire in the 8 months I had it when I bought the car until I got it fixed, your problem may be something else...
Last edited by DosyBoy; Oct 27, 2013 at 09:40 PM.
Driver
Joined: Oct 2013
Posts: 194
Likes: 1
From: VA
I checked my oil and I see no signs of coolant mixture. I may have to perform a chemical block test to confirm if the head gasket is ok or not
It's not really an issue if you're not losing coolant. Are you losing coolant? I just threw it out there. I wouldn't suspect head gasket unless you had other symptoms in addition to the cold mis-fire.
Thanks for the insight guys, I will further investigate. My car has been down since Sunday due to a clogged catalytic converter. I'm waiting for my OBX header to come in.
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swiggins
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