1995 P30 backfiring thru intake when hot
Hi, wondering if anyone has had a similar problem like this: 1995 southwind 33 ft P30 7.4L TBI with Banks exhaust. 73k miles. Rv gets used alot. Every 3 weeks or so. Starts loosing power and p...
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2bzy2c wrote:cncsparky wrote:2bzy2c wrote:
Backfiring is NOT fuel related.
There is no way fuel would cause a backfire on its own.
NOPE.
Just do a Google search "lean backfire"
Watch and learn
Thats a nice elementary explanation of some causes of backfire (as the presenter states).
However, YOU said that fuel will not cause a backfire. Wrong.
Many sites out there for you to 'read and learn' ;)
Let me help you.
http://www.2carpros.com/articles/what-is-an-engine-backfire
http://answers.edmunds.com/question-What-causes-a-backfire-166518.aspx
Most of the following came from fordfestive.com - Possible casue of Backfiring
Backfiring can be casued by the following:
Internal carburetor problems (on initial WOT acceleration, this can be caused by a defective accelerator pump).
Weak or broken valve spring (Usually severe. When it is exhaust, backfire will occur in the intake)
Low compression
Cam to crank timing off (rare, usually result in hard/no start condition)
Burnt/damaged valves or seats (sever usually)
Worn cam lobes (lack of power, can be severe backfire, often through carb)
One or more valves adjusted too tight (heard through carb then intake is usually too tight, heard through exhaust then exhaust is too tight)
Preignition (caused by deposits or lean engine conditions)
Water in fuel
Need more?
