detonation
Thread Starter
4th Gear Member
Joined: Sep 2005
Posts: 1,041
From: South Carolina
detonation
sometimes my engine detonates under throttle. i use 93 octane and the base timing is at 10. what could be causing it and what can i do to get rid of it. the engine probably has 200,000 miles on it now but doesnt burn or leak any oil and runs strong.
6th Gear Member
Joined: Nov 2006
Posts: 9,239
From: Spfld, MA
RE: detonation
you have carbon buildup in the cylinders causing an increase in compression ratio.
run a whole bottom of seafoam through the brake booster vacuum while its running. after you've finished, shut it off for 15 minutes, then restart and rev up a little.
run a whole bottom of seafoam through the brake booster vacuum while its running. after you've finished, shut it off for 15 minutes, then restart and rev up a little.
D.R. THE PATHETIC DORK
Joined: Jun 2007
Posts: 30,871
From: West Virginia
RE: detonation
DON'T TRY WATER !! if you don't know what your doing... improperly done it can hydroloc a motor use a substance that many parts stores sell that is burned through the cumbustion process. BG PRODUCTS MAKES a induction clean set up that is industrial strength that comes with the heavy duty induction cleaner and 44k for the intake fuel system works great!!
Banned
Joined: Dec 2005
Posts: 22,374
From: Lil' Rhody
RE: detonation
ORIGINAL: mjr46
DON'T TRY WATER !! if you don't know what your doing... improperly done it can hydroloc a motor use a substance that many parts stores sell that is burned through the cumbustion process. BG PRODUCTS MAKES a induction clean set up that is industrial strength that comes with the heavy duty induction cleaner and 44k for the intake fuel system works great!!
DON'T TRY WATER !! if you don't know what your doing... improperly done it can hydroloc a motor use a substance that many parts stores sell that is burned through the cumbustion process. BG PRODUCTS MAKES a induction clean set up that is industrial strength that comes with the heavy duty induction cleaner and 44k for the intake fuel system works great!!
Thread Starter
4th Gear Member
Joined: Sep 2005
Posts: 1,041
From: South Carolina
RE: detonation
act is only a year old, if that. it went bad last year, threw a code so i replaced it. but i guess it could be bad again. dont know how to check them so maybe i'll run up to napa today and get one.