Re: point gap

Posted by jdemaris on December 31, 2006 at 15:04:14 from (66.218.12.38):

In Reply to: point gap posted by bm3501466 on December 31, 2006 at 14:32:25:

I'm going to be simplistic here, but the point gap effects spark-intensity potential. It also effects timing. Some small engines have no timing adjustment other than proper point-gap.
In regard to plug gap - it determines how much voltage is required to make the spark. If the gap is set wide enough that it calls for more voltage than the system can supply and/or deliver - the engine won't run.
If the gap is set too narrow - it fires at low voltage and can foul more easily.
Often points set too wide make the engine skip and break up - and go a little wider and it won't run at all.
With plug gaps - you can set them as wide as the system can handle - which depends on the coil, wires, and other parts in the distribution system. One example is my wife's 95 Subaru Impreza. It got hard starting recently. Finally one morning - no start. Close to 150K miles and the spark-plugs have never been out of it (that I know of). Pulled the plugs out and the gaps were well over a 1/4 inch. It had finally gotten to the point where the ignition system could not produce enough to jump the gap. Put new plugs in and it ran like new again. Amazing that plugs can last that long.

Replies:

• Re: point gap noncompos 19:15:36 12/31/06 (1)
  • Re: point gap jeaffcat 23:32:48 12/31/06 (0)

Add a Reply Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]