popping sound and loss of power. help
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Audiworld Junior Member
Joined: Oct 2013
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From: northern ireland
popping sound and loss of power. help
my 2.8 was popping and losing power so I thought I would change the maf but its still doing it?
pulled each lead when it was running and all sparking well. what next?
pulled each lead when it was running and all sparking well. what next?
AudiWorld Super User
Joined: May 2010
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From: East TN
From the tail pipe? ...backfiring?
Under the hood? Just while accelerating?
Last edited by silverd2; Oct 17, 2013 at 07:17 AM.
Thread Starter
Audiworld Junior Member
Joined: Oct 2013
Posts: 82
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From: northern ireland
AudiWorld Super User
Joined: May 2010
Posts: 2,611
Likes: 11
From: East TN
No codes doesn't help much.
With a valve or valve timing problem, any car can backfire back through the intake. So, since you have a loss in power also, I'd start with a close inspection of the valve timing. You'll need to have the upper timing belt covers off, then set the crank pulley (hand turn engine with a socket wrench) to TDC at the marks. The engine hits TDC twice during a cam revolution, so if the large cam timing holes are not facing inwards, then one more rev to TDC again. Proper timing is TDC at the crank and the timing holes dead level across, with large holes facing in (every 2nd turn of the crank)...see drawing.
If the timing is correct, you might want to move on to a compression check.
The above are just guesses based on very little info.
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Thread Starter
Audiworld Junior Member
Joined: Oct 2013
Posts: 82
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From: northern ireland
Thank you for getting back to me. Will get a check in the morning.
Just put injection cleaner in tank and I let it run a while and now letting it sit over night.
Hope its just a blocked injector
Just put injection cleaner in tank and I let it run a while and now letting it sit over night.
Hope its just a blocked injector
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Thread Starter
Audiworld Junior Member
Joined: Oct 2013
Posts: 82
Likes: 0
From: northern ireland
Thank you for getting back to me. Will get a check in the morning.
Just put injection cleaner in tank and I let it run a while and now letting it sit over night.
Hope its just a blocked injector
Just put injection cleaner in tank and I let it run a while and now letting it sit over night.
Hope its just a blocked injector