GolfGTIforum.co.uk
Model specific boards => Golf mk2 => Topic started by: Conker on 13 January 2008, 10:40
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Hi all, question regarding my 1991 16 valver...
I recently solved the misfire on my 16v'er by adjusting the timing using a timing gun and turning the distributor until the marks lined up. Last night I saw a picture on VWVortex that made me think something was wrong.
In the picture below, you can clearly see the timing marks. Unfortunately I have timed mine to the red X, not the 6 degree BTDC mark. The question is, it runs better timed at the red X shown below than at the 6 degree BTDC. What does this mean? Does it mean my CO2 setting is well off or something like that? I.e. Im compensating for a weak/rich mixture by retarding/advancing the timing???
The odd thing is its now running 95% perfectly, apart from a slight stutter below 2000rpm when the engine is warm (its not there when cold). The other issue is that the distributor is FULLY turned anti-clockwise i.e. it can't go any further, and yet the engine seems to want to be turned even more that way to get it running 100% perfect.
Please help - I need to do a long journey in it on Tuesday and want to get this sorted ASAP.
(http://img29.picoodle.com/img/img29/4/1/13/f_Timingm_7f63d5d.jpg)
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it should be 6 degrees before tdc :smiley: with the middel off the rotor on the line on the dizzy. :smiley:
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I know it should do, but it runs better when its more than 6 degrees BTDC ?!?!?!
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weird :smiley:
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Anyone got any ideas?? I've got to fix it today :undecided:
(I don't want to do a long journey tomorrow if its not 100%)
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You're not using a timing gun with an adjustable advance are you?
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You're not using a timing gun with an adjustable advance are you?
No, its just a boggo standard one, but cracking idea though Mew - that would be a perfect explanantion, as thats just what it feels like, i.e. its running reasonably well, but just at about 10 degrees BTDC, not 6 degrees.
Other very random ideas I've had...
1) The previous owner did something to it so that ran fine on 95 ron petrol, and since Im putting v-power in it its throwing out the timing?!
2) The static timing is out on the pulleys/crank?!
3) Its got a mild sports cam on it (don't think so)?!
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Other very random ideas I've had...
2) The static timing is out on the pulleys/crank?!
That would be the first thing i would check :wink:
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10 degrees is not that excessive, as long as it starts ok and doesn't pink under load leave it as it is - wouldn't venture lower than the high octane stuff you're using though.
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10 degrees is not that excessive, as long as it starts ok and doesn't pink under load leave it as it is - wouldn't venture lower than the high octane stuff you're using though.
:grin: mine loves Tesco's cheap sh1te!!!
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The tescos stuff over there is quite good apparently!
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indeed, on older/not clever ignition systems (e.g. k-jet, carb) using good fuel you can run more than the factory 6 degrees advance, which will increase the cars performance. However try this on a Digifant 8v and you wont get far. This is because the ECU automatically advances the ignition as far as possible, untill it detects knocking/pinking :)
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Yeah was going to say I was wrong about that, read it in your tuning guide today!
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wrong about what? Everything you said was correct when talking about a 16v ;)