My Blazer is Knocking (Pinging)
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hi all, im getting some pinging coming from my blazer, it only happens when the engine is warmed up, and ive tried using premium which seems to help but i want to fix the problem the right way
so my question is, where is a good place to start looking for the cause of my knock?
so my question is, where is a good place to start looking for the cause of my knock?
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Originally Posted by 93Bonne
Put a screwdriver to your ear and then point it to where you think it is.
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hmm, it maybe be the plugs... i guess theyre a little old, less than 2 years tho :?
is the screw driver necessary? i thought that was more for finding a mechanical knock, not a pre detonation knock...
is the screw driver necessary? i thought that was more for finding a mechanical knock, not a pre detonation knock...
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Pinging can be a number of issues, one thing mentioned above, carbon hot spots on pistons, I used Sea Foam on my 93 SSEi, it wasnt to bad though, your Blazer could be though. A good tune up will do wonders if u havent done so already. Lots of things to cover. Air filter, fuel filter, pcv, plugs, wires, cap and rotor if so equipped.
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Matt can you hook a scantool to the blazer and see if the Timing is stuck in EST Bypass mode?
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ill check the timing when i get a chance...maybe the cap got put on slightly off...
im gunna do a full tune up next time i am home, the wires and cap and rotor are less than 3 months old. the air filter is less than 6 months old and is a K&N.
the oil pressure is good, well as good as a 13 year old engine can be... roughly 40 psi when fully warmed up at crusing speeds.
i dont have access to a scan tool, sadly im up at school and i dont know of anyone/ anywhere that would even have anything... but i may try to when i go back home and see if my friend has one.
im just trying to get ideas of where to start first, the only tools i have here are a screwdriver, hammer and a few other misc items.
thanks for the suggestions so far guys
im gunna do a full tune up next time i am home, the wires and cap and rotor are less than 3 months old. the air filter is less than 6 months old and is a K&N.
the oil pressure is good, well as good as a 13 year old engine can be... roughly 40 psi when fully warmed up at crusing speeds.
i dont have access to a scan tool, sadly im up at school and i dont know of anyone/ anywhere that would even have anything... but i may try to when i go back home and see if my friend has one.
im just trying to get ideas of where to start first, the only tools i have here are a screwdriver, hammer and a few other misc items.
thanks for the suggestions so far guys
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