Quote:
Originally Posted by MMGT1
I agree for the most part with him here. Only difference, if you read the SI doc about the top end cleaner you'll see that it is to be mixed with gas and fed to the fuel rail with a pressure canister. The same way a "proper" injector cleaning is done. The top end cleaner bottle has a section to the top of it that will allow you to make precise measurement of the cleaner in a ratio to fuel for best results. Do this twice, then replace the plugs. If I remember, the bottle has the ratio required in the directions on the back of it.
GM also has a "Ring Cleaner" available that is poured directly into each plug hole and has to sit for somethin like 4 hours before starting, then shutting down and changing the oil. The product can also be used to make an attempt at getting a locked or siezed motor to fire up! Just an FYI
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Maybe things have changed. Im pretty sure I read and followed the directions...
I will be doing this again shortly on another car. Going to pick a bottle up this week or next. Will update.
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