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Re: 87 fed s10 blazer tbi fails nox
Posted to Emissions Forum on 2/10/2005 3 Replies

Hello Aaron,

I always take the egr valve off and start the engine. On this one it should run really fast due to the large vacuum leak from the valve not being there and you can verify exhaust is getting to the valve at that time. It seems strange that the en... Login to read more.

3 Replies Received (View Replies)