2Ltr Pinto Bike Carbs

[Guest Barry Knowles]

when cold finding it hard to start. full choke bit of throttle. did 250 miles two days before runs brill. now when it starts small flame from exhaust. but still runs well.when warm. and starts well when warm.thinking new plugs. any idea.

[Bob Tucker]

Flame from the exhaust when starting suggests neat fuel is ending up

in the exhaust system. That could be duff plugs or poor/weak ignition.

Pinto plugs are cheap enough to try them first. Check for a fat healthy spark

from a plug held against the cylinder head....carefully!

Rubber gloves/shoes/insulated pliers are recommended.

Edited April 25, 2016 by Bob Tucker

[theduck]

What spark plugs have you got in the moment?

[Guest Barry Knowles]

What spark plugs have you got in the moment?

will let you know.

[theduck]

In the ngk range should be ap6fs or similar. The number is the heat rating and is the important bit in this situation. If it's a higher number, it could cause poor cold starting.

[Guest Barry Knowles]

In the ngk range should be ap6fs or similar. The number is the heat rating and is the important bit in this situation. If it's a higher number, it could cause poor cold starting.

just ordered some accuspark af7c triple ground plugs.ill try them first. cheers

[theduck]

They seem to be the equivalent to the ngk I recommended so should be ideal.

[Andi]

My old pinto bike carb set up would not start at all from cold if I even thought about touching the accelerator.

Just full choke only (or fuel enrichment as the bikeys like to say)..

They can be very choosy on starting.

 

Andi

[Snapperpaul]

Bike carb choke mechanism is disabled by the throttle action that's why the engine stutters if you dab the throttle while using the choke

[HAWKNORTH]

Yamaha R1 carbs on my 2.1L Pinto. Full choke no throttle. Always takes a while when the car has been stood a few days.

Edited April 27, 2016 by HAWKNORTH