Bogging down and freequent backfireing

[gavinhendy]

Driving my mini today and realised on full throttle it bogs down a lot and its forever backfiring , anybody have any idea on my problems , I was thinking to little or to much fuel and check timing :-$ apart from that I'm puzzled

Thatnks
Gav

[jackdaw]

Sounds like the timing is off to me Gav!

[gavinhendy]

Ok so who is the resident timing checker :-) haha , Il POP to a garage after work and ask them to check the timing for me :-)

[jackdaw]

No need to have a garage do it

Loosen the securing bolt on the dizzy shaft so that you can only just turn the dizzy and with the engine running, turn the dizzy slightly in one direction.
If the engine sounds "rougher" turn the dizzy in the opposite direction back to where it was then on by the same amount again.

You should find that the dizzy can be turned through 10-20 degrees while the engine still runs. Once you have found this "segment" your perfect timing point is somewhere in the middle of it.

The trick then is to keep tweeking the dizzy little by little to get the engine performing correctly. That position should be between the points where the engine backfires at revs and where you can hear it "pinking" at revs.

A short road trip after each adjustment of the dizzy will soon tell you when you have found the "sweet spot"

Finally.........remember to re-tighten the dizzy securing nut!

Another tip, once you have got the engine running correctly, is to put a white paint mark across from the engine block onto the dizzy shaft so you can always get back to that datum position in the future!

Have fun! ;D

[gavinhendy]

Thank you verry much gar , I will give it a go , if I'm finding it hard could I POP down your way for some guidance

[jackdaw]

No probs Gav
I'll PM you my address

[gavinhendy]

Thanks buddy ,
Your a great help

[gavinhendy]

Thanks to the ledgend that is jackdaw !! My car is now running as sweet as a nut , the timing was right out and now it dose not miss a beat and is so much faster I can't believe its the same car :-) :-) :-) awsome stuff

[jackdaw]

Just a little tweek to the timing can make all the difference.

Now remember to re-tighten that bolt !!!!!!!

;D ;D