|
Hi.
I have a bit of a different view on this. In fuel's class, they taught us that riich = good; lean = bad. To greatly oversimplify, if you run too rich, the worst you will do is foul your plugs; if you run too lean, you'll burn up your pistons and valves.
We discussed pinging and backfiring in another series of posts. Discussion got pretty heated, with different views. Here's mine.
Pinging generally is caused by using fuel with too low an octane rating. This leads to premature combustion of fuel. Backfire through exhaust is caused by the less restrictive muffler. This leads to reduced backpressure that affects "scavenging" (intake and exhaust valve overlap) and effectively leans out the air/fuel mixture.
Unless you change timing or make other accommodations, pinging and backfiring are unavoidable consequences of using lower than recommended octane or going to off road pipes.
My two cents worth are to use the recommended octane and to go stick with the original muffler.....Jerry,
[ This message was edited by: jerrysussman on 2003-07-15 07:42 ]
|
