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seems only when I press on the gas when the motor is good and hot, it make a pinging noise but goes away almost instantly until I press the gas again. I did some research leading me to think it may be a charchol canister or vsv problem. Also possibly fuel pump related ? Also CEL is on for gas cap but replaced that light still came back on and still get pinging .. anyone have these issues ??
Are you only running premium good quality gas only? Also is your pining in only certain RPM's or is it constant throughout all RPM's when accelerating?
Are you only running premium good quality gas only? Also is your pining in only certain RPM's or is it constant throughout all RPM's when accelerating?
yea only run 91. And seems to be through out any RPMS if I’m going like 70 with the Rpms around 4K it will do it or if I’m going about 30 with 2-3k rpms it will do it. But like I said only for a couple seconds if I barley tap the gas pedal ... also CEL is on for gas cap but I replaced it CEL still came back
Sounds like you have a vacuum leak. Lift off the engine cover and check your hoses. One of mine was loose once in this area (see below).
yea I actually just replaced both those hoses that go to that vsv . Look at this picture of the air box though . Previous owner rigged this together. Could this be a problem with the vacuum leak??
Looks like a fast JB weld type of job. I would be very suspicious of that especially since it is after the MAF sensor so if it is leaking,air is not metered/read by the engine computer.
Do you smoke Cigars? If so you can blow smoke into that black rubber line and see if you have any leaks around that area. Cigar smoke and smoke machines work the best for finding vacuum leaks.
What I have seen some home mechanics do is spray a quick bit of brake cleaner near intake gaskets, couplers or areas of potential vacuum leaks and take notice if the engine idle changes once sprayed or you can use a small amount of propane as well. Just keep the brakes cleaner away from your MAP sensor or you could ruin it but I would prefer the propane from a hand torch method vs using brakes cleaner.
Something tells me that's the source of your leak. Very common point of failure (see below). Looks like the previous owner tried to fix it but as some point it failed, that's why your code keeps coming back. There are a couple of things you can try. Look for a replacement at your local junk yard or find one on eBay.
04-03-18, 07:43 PM
Pinging sound when I accelerate
