setting/cheaking the timing on a MV

[axeman]

hi there can any one help me with the timing on an 2.1 MV. by that i mean explain it in simple terms i have ahd a look on the wikky but only sceam to be able to find DJ timing. this may be only me? the reason for this is that a am getting crappy fuel comsumption between 16 and 18 mpg. and i have been told that this could be one of the possible causes. is there any thing else that i can look for?
any help appreciated thanks neil.

[kevtherev]

do you have a haynes?

[tonytech]

fuel comsumption between 16 and 18 mpg. .

Is that around town? Do you have a high top camper?
If you drive it hard you wont get much more.
T

[axeman]

it is a doka syncro at the weekend driving from london to wales, up and down a big hill off road and then back to london i averaged 16.71MPG

[syncrosimon]

I have a big very heavy syncro camper, I will get mid twenties on the motorway, and around 20mpg commuting and playing around the lanes. Never got as low as 17mpg.

Are you thrashing her too much, I try not to.

The americans report similar lowest mpg.

have a look through this thread.

http://www.thesamba.com/vw/forum/viewto ... hlight=mpg" onclick="window.open(this.href);return false;

Simon.

[axeman]

feeling a little better now thanks simon

[Aidan]

MV timing is fairly straightforward but done dynamically rather than at idle.
I retimed because I run lpg most of the time so +5degrees worthwhile because of the higher octane rating of the lpg, but I haven't run much on petrol, or in cold conditions so we'll see what it's like then, but no obvious pinking yet on petrol.

you need a digital timing gun with rpm or a rev counter and another person
engine at normal operating temp add timing gun and start it up then
disconnect temp 2 sensor and tuck connector up away from exhaust (top tip or you may melt it /the wires), engine revs will pick up
rev it to 2500 and hold it there and timing mark (the one closest to the engine) should align with the join in the case halves that's 5 degrees btdc which is mid range for the mv 3-7 degrees btdc acceptable range
let her idle reconnect temp 2 revs drop then observe the timing mark on the pulley with the gun as you rev it to 3000 and you will see the timing mark advance by 40+ degrees that's correct.

You have to disconnect temp 2 with engine running or it will start in limp mode and if you try and time it connected the ecu will advance the timing for itself