97 GMC Sierra v6
10

Asked by AndrewGKing Mar 29, 2016 at 01:46 PM about the 1997 GMC Sierra 1500 C1500 SL Standard Cab Stepside SB

Question type: Maintenance & Repair

Recently put in a new engine in my 97 GMC Sierra
and now its throwing a P0300 code random
misfire. I've changed everything from the spark
plugs, spark plug cables, ignition coil, distributer
cap, distributer wheel, and ensured the timing is
lined up. Just not sure what else to do?

6 Answers
10

AndrewGKing answered 8 years ago

Watched a video and a guy said something to do with the cats being blocked up, could this happen?

Mark helpful
10

AndrewGKing answered 8 years ago

It does have a large amout of power loss but the engine does rev up and I've noticed the is a small amount of fluid that sprays out of the exhaust?

1 people found this helpful.
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10

AndrewGKing answered 8 years ago

Today I loosened up the exhaust manifold from the exhaust pipe to check if the code would go away and see if any power was returned and there was not

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10

AndrewGKing answered 8 years ago

I was able to sync it yes. I lined up the crank with the line and tick mark on the block the lined my distributor up according to the manual.

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10

AndrewGKing answered 8 years ago

I went and got some chevron injector cleaner and a full tank of gas now im going to just drive until the fuel runs low?

Mark helpful

Your Answer:

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