Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 Latest issue

Over the last few weeks have noticed a decline in the idling, along with an intermittent engine warning light.
Finally motor was very vibratory at lower revs, but seemed ok at higher revs when cruising.
Have new Walbro fuel pump, fuel filter and sparkplugs
Decided to have look at and clean injectors. Nothing obvious but had them professionally done to be sure. Nothing untoward noted
When putting back on car, test started motor with cooling fan not in place so could see them.
Turned on key, nothing to see.
Started motor and by chance noticed a small puff of fuel from one injector just as motor fired, then all good with motor running!!
On closer inspection, the fuel hose to the injector was the problem
On more closer inspection i found the hose almost blocked with loose delaminating inner layer of hose.
The second hose was the same!!
Since replacing the hoses, the motor is smoother running, idles consistently and engine light has gone. Yay

For the record, the fuel hose on my car was 7.3 mm. I replaced with 5/16in which seemed to fit ok

Do you use some sort of fuel additive?

Good spot & thanks for sharing.

A few years back my HD had this sort of not quite running right thing and would feel like it farted when I laid on the throttle. Turned out a small split in the fuel line inside the tank and not quite enough pressure to the injectors.

What is the vintage and mileage of your machine?

New Zealand fuel has a reputation of overuse of additives to attain octane ratings so is probably a partial cause.
My m3w was made April 2012, so an early edition. Have managed just over 30,000 kilometres