should i get my engine decarbonized after replacing \the egr valve
50,000 miles 99 grand prix gtp- posted
20 years ago
De-carbon
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- posted
20 years ago
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
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- posted
20 years ago
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..