Sparkplugs

wastepro · #1 07-16-2008, 03:54 PM

My 2004 Trailblazer with 85,000 miles has started to significantly use more gas. I was going to change the sparkplugs, but I can't see them from the top.

Anyone know a easy way to get to them?

maxwedge · #2 07-16-2008, 06:45 PM

Welcome to AF. Take off the air cleaner intake ass'y.

wastepro · #3 07-17-2008, 01:45 PM

I can not see them are they on the passenger side of the engine?

maxwedge · #4 07-17-2008, 06:33 PM

They are directly on top of the engine in the middle of the valve cover.

wastepro · #5 07-24-2008, 07:37 PM

Thanks for the advice. That was fairly easy. Looks intimidating when you take the air intake assembly off, but the electronic plug wires and plugs were easy to remove.

Installed Bosch Platinum Plus 4, added a can of Castle Dragon Power fuel system cleaner and mileage is back to 20 mpg.

MT-2500 · #6 07-25-2008, 09:13 AM

I would.
Drop the bosch in the trash can and get the Ac-delco plugs the ac book calls for.
MT

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