Life Mechanic help needed asap..please.

Dottefan · 12-20-2009, 06:41 PM

Over the past couple of weeks my truck has started to backfire. I have a 98 2 door tahoe with a 5.7 liter vortec. Well Today, along with the master cylinder I went ahead and replaced the spark plugs and wires, and fuel regulator...but it still keeps back firing. It happens mostly when I take my foot of the gas, it starts to do it very rapidly, and its Idling ruff.. when I have my foot on the gas, it doesn't do it that much..it also acts like it wants to die on me every so often..I`m dropping it off at the shop tomorrow, not sure whats up with it..I `m thinking the compression is off, or the fuel pump..I also noticed that I had a hole in my muffler, while I was bleeding the breaks maybe thats the reason? I dont know...and Ideas ?

12-20-2009, 06:41 PM	Topic Starter
Dottefan Banned Join Date: Apr 2009 Location: FROM KCK, LIVIN N J\O Casino cash: $10004900	Mechanic help needed asap..please. Over the past couple of weeks my truck has started to backfire. I have a 98 2 door tahoe with a 5.7 liter vortec. Well Today, along with the master cylinder I went ahead and replaced the spark plugs and wires, and fuel regulator...but it still keeps back firing. It happens mostly when I take my foot of the gas, it starts to do it very rapidly, and its Idling ruff.. when I have my foot on the gas, it doesn't do it that much..it also acts like it wants to die on me every so often..I`m dropping it off at the shop tomorrow, not sure whats up with it..I `m thinking the compression is off, or the fuel pump..I also noticed that I had a hole in my muffler, while I was bleeding the breaks maybe thats the reason? I dont know...and Ideas ?
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