Re: engine running backwards?

Posted by Allan in NE on September 28, 2005 at 05:53:03 from (148.78.243.26):

In Reply to: engine running backwards? posted by Dave in MN on September 27, 2005 at 20:10:22:

Hi Dave,

Because on a 4 stroke/4 cylinder engine the firing sequence is identical from either end, no matter how you "label" the cylinders. No matter how you "label" that cap.

Bear with me, hope I can do this. :>)

"I wired it the "correct way with #1 cyl on the fan end. Nothing."

Now you've got the wires and plugs on the wrong cycle; valves are hanging open when you're trying to fire the cylinder.

"Turned the dist 180 degrees. Nothing."

Now, in addition to the wiring and plugs being wrong, you've also got the rotor and cap on the wrong cycle as well. You've finished the job; you've got 'er completely and totally 180 degrees out of time because those valves are still hanging open at that particular instant in rotation.

So you say, let's start all over. Let's bring that "fan" cylinder up on the compression stroke and time it from scratch; working from the inside towards the outside.

Hmmmm okay, away we go. Well lookie here, at the end of the day we are right back where we started.

And, the darned cylinders still seem to be "labeled" wrong. :>)

Allan

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