Twin Sidedraft Problem

[h1_roll4]

hey all.

 

Ive got a 4age with twin solex 40PHH Carbs.

 

Ive just got it started and running.

It runs but not well.

It had no power, wouldnt go over 10-15ks, was back firing out the exhaust and out of the carbs.

 

Ive checked the timing, thats all good and i can think of what else would be causing it.

 

Can anyone shead some light?

 

Cheers

josh

[jason12]

Maybe a vacum leak somewhere? Did you change anything else when putting them on?

[philbey]

Are the carbs setup for this motor? Jets, Chokes etc?

[h1_roll4]

ive made sure there is no air leaks anywhere.

And i bought the engine with the conversion already done, they were running/tuned/set up to be on the engine.

The only thing that ive changed is it came with a bigport hks manifold with a bigport-smallport adaptor, and ive put a smallport redline manifold on as space was limited.