should i get my engine decarbonized after replacing \the egr valve
50,000 miles 99 grand prix gtp
De-carbon
Jan 27, 2004
2 Replies
50,000 miles 99 grand prix gtp
add small amounts of water through the intake manifold that would raise compression and blow out carbon you have to be very careful.
Jim.J
well the dealer told me that the egr valve failed because of carbon build up and therefore i should get it cleaned out 3 hour job and $400.00 the egr replacement was coverded by warrenty but not the cleaning job..
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