E50 pinging bad, timing is good

E50 pinging bad, timing is good, points starting to open at 16-18mm before TDC , it’s a 78 Newport with oil injection. Would too high of octane cause this?

Re: E50 pinging bad, timing is good

Too low octane could possibly cause pinging .

Check for carbon in the combustion chamber and maybe try new spark plug .

Re: E50 pinging bad, timing is good

> Keno Rojas Wrote:

> -------------------------------------------------------

> E50 pinging bad, timing is good, points starting to open at 16-18mm

> before TDC , it’s a 78 Newport with oil injection. Would too high of

> octane cause this?

Is it stock?

Re: E50 pinging bad, timing is good

Yes it’s stock. Carbon was cleaned off combustion chamber and piston a month ago. I will try different plug

Re: E50 pinging bad, timing is good

Flywheel torqued properly?

Re: E50 pinging bad, timing is good

Chöschi21 C.K. /

Check for Crank play, maybe one of the connecting rod bearings gave way.

Re: E50 pinging bad, timing is good

Overpriced Parts /

Pinging or clunking ?

Turn fly wheel back-and-forth by hand and see if you can hear feel a real bad clunk, it could be wristpin small crank end worn

Re: E50 pinging bad, timing is good

Richard Eberline /

What did you time it with, your eyeball or a guess. I would like to see the plug.

Re: E50 pinging bad, timing is good

> Keno Rojas Wrote:

> -------------------------------------------------------

> E50 pinging bad, timing is good, points starting to open at 16-18mm

> before TDC ,

Do you really mean to say sixteen to eighteen millimeters? This is important.

Re: E50 pinging bad, timing is good

Yes millimeters, pic taken from Haynes Puch maxi moped workshop Manuel

C11D2E28-C70D-4FAA-8C87-C7BA70A3E8A6.jpeg

Re: E50 pinging bad, timing is good

B6hs

E444B453-7A1F-4C5E-AA5B-C9810306E3D3.jpeg

Re: E50 pinging bad, timing is good

I am not familiar with the method of timing an engine by measuring the distance of a punch mark on a flywheel to approximately the joint line in crankcases.

Re: E50 pinging bad, timing is good

How do you generally time an E50?

Re: E50 pinging bad, timing is good

Ha!(edited)

Re: E50 pinging bad, timing is good

Find tdc and then measure 16-18 mm before it (to the right) then mark it on the flywheel and run it with a timing light.

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