The last few weeks Ive been trying to track down a knocking noise under acceleration in my 89 325ix. It sounds like a knock/pop sound that will happen a few times per second while on the throttle when I accelerate hard at any point in the rev range. When I go in deep snow as soon as I lose momentum I get the same noise and have power loss. Without pushing the car it drives and sounds normal. No idle issues.
From what Ive found online Im assuming its either a spark problem or possibly air/fuel issues. I changed all the plugs yesterday and they all looked fine, and all matched. The distributor was replaced 8 months ago, and they plug wires not long before that. I checked them all anyway and everything looks fine. At this point Im going to check where the plug wires go into the distributor for cracks, and change the fuel filter. After that the only thing I can think to check is injectors.
Basically I wanted to know if anyone has personally had this issue, or any advice on things to look for. I think Im on the right track, but engine knocks scare me and Id like to get this resolved as quick as possible.
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bfraser30
The last few weeks Ive been trying to track down a knocking noise under acceleration in my 89 325ix. It sounds like a knock/pop sound that will happen a few times per second while on the throttle when I accelerate hard at any point in the rev range. When I go in deep snow as soon as I lose momentum I get the same noise and have power loss. Without pushing the car it drives and sounds normal. No idle issues.
From what Ive found online Im assuming its either a spark problem or possibly air/fuel issues. I changed all the plugs yesterday and they all looked fine, and all matched. The distributor was replaced 8 months ago, and they plug wires not long before that. I checked them all anyway and everything looks fine. At this point Im going to check where the plug wires go into the distributor for cracks, and change the fuel filter. After that the only thing I can think to check is injectors.
Basically I wanted to know if anyone has personally had this issue, or any advice on things to look for. I think Im on the right track, but engine knocks scare me and Id like to get this resolved as quick as possible.
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