Hello,
Got a weird issue where my new setup has the odd backfire through the carb usually under load at lower revs... can't consistently replicate.
1380 MG Metro unit, built by RobWalker, refurbished Hif44, MG Metro manifold, RC40 exhaust, piper cam, DISTRIBUTOR WITH VAC A PLUS YELLOW TYPE.
Engine has been setup properly, timing set by a friend of mine (engine builder), 2 weeks ago a rolling road tune up got 112bhp which was sweet.
Everything is essentially new.... followed the best practices everywhere.... can't seem to work it out?