MG-Cars.net

Welcome to our resource for MG Car Information.

Recommendations

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGB Technical - Still running rich 1968 Roadster

Car seems to be running pretty good, but when I check the plugs, there still carbon black...I am using high octane gas 93...Should I switch to regular gas and add the lead additive?...Could this be my problem?

Thanks Mike C...
Mike

Mike: I have a 69 and use only 93-94 octane, which is just right for the high compression (8.8:1) engine in our cars.
Your mixture is a bit too rich, you need to tune the carbs to lean it out.
Actually, if you havent tuned the engine before, for best results check the point gap, timing, and adjust the valves before you start tuning the carbs.
Which plugs are you using?
Andy Blackley

I recommend that you go the full Monty and give the ol' girl a complete tune-up. Failure to do so usually results in chasing a simple problem in the wrong direction.
Adjusting the carbs is the last item in a rather lengthy checklist (for a very good reason).

Mike!
mike!

This thread was discussed between 17/06/2004 and 18/06/2004

MG MGB Technical index

This thread is from the archive. The Live MG MGB Technical BBS is active now.