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2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

99 suburban backfiring

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Old Sep 19, 2018 | 10:45 PM
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99burban5.7's Avatar
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Default 99 suburban backfiring
Okay so im hoping you guys can help me out or at least point me in a good direction. Heres the issue my suburban was running fine till i was driving about 35mph and it backfired twice and died out. Ive replaced the timing chain, distributor, camshaft sensor and, checked my firing order. It turns over but hesitates and backfires. Any input on what it could be?
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Old Sep 21, 2018 | 3:29 AM
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Originally Posted by 99burban5.7
Okay so im hoping you guys can help me out or at least point me in a good direction. Heres the issue my suburban was running fine till i was driving about 35mph and it backfired twice and died out. Ive replaced the timing chain, distributor, camshaft sensor and, checked my firing order. It turns over but hesitates and backfires. Any input on what it could be?
You have any OBD II codes for us?
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Old Sep 21, 2018 | 8:30 AM
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That truck has coil and module?only items left for ignition
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Old Sep 21, 2018 | 1:37 PM
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You're 100% sure the cam timing is correct? And, that it's synched with the ignition? Make sure.. Considering the timing chain was replaced this could have changed and that would do it.
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Old Sep 21, 2018 | 7:47 PM
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Originally Posted by falconbrother
You're 100% sure the cam timing is correct? And, that it's synched with the ignition? Make sure.. Considering the timing chain was replaced this could have changed and that would do it.
how do i check of the cam timing is synced? I lined up the two dots at the 12 o’clock position like it was supposed to be.
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Old Sep 21, 2018 | 7:48 PM
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Originally Posted by geo1
That truck has coil and module?only items left for ignition


im checking the coil sunday. Hopefully that works
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Old Sep 21, 2018 | 7:49 PM
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Originally Posted by oilcanhenry
You have any OBD II codes for us?

none other than my o2 sensors because i had to delete the cats
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