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Hi all, lets just begin by saying my 2004 Golf V doesn't have the most engine around these parts - an ordinary 1.6 102hp petrol engine, code BGU. Manual transmission.
The trouble is that at idle the engine irregularly vibrates, which can be felt throught the seat, wheel and pedals. The vibrations are a bunch of weaker jolts with some stronger jolts thrown in.
Had the engine checked at a couple of reputable garages. To exclude some possibilities:
- The ignition system is good, no ignition troubles.
- The fuel system is good. The injectors have been ultrasonic cleaned and work fine.
- No starting problems whatsoever.
- No engine speed fluctuation problems whatsoever.
As I currently see it, the vibrations are clutch and/or flywheel related. This engine has a single mass flywheel, FYI.
* The clutch engages quite high and usually when pulling away from a standstill, the engagement is accopanied by a slight jolt as the friction surfaces meet.
* When in 2nd gear and of course no handbrake on, the car can be manually pushed back and forth a couple of ft / 30cm. This should mean there is a large slack somewhere?
* There is a slight clatter sound, which dissapears when the clutch is pressed down. Excellent video here -> http://www.youtube.com/watch?v=bNBvnHlUkmY
* When I let off the gas, as car starts to decelerate, it jolts forward 3 times. No matter what gear or speed.
* When changing gears and not letting off the clutch really-really slow, it jolts one time.
* When rev-matching downshifts and hitting the revs a little bit too high AND letting off the clutch fast, it clunks and jolts several times. When hitting downshift revs too low, there is no clunking.
* I recently had the transmission mount replaced, whereas the engine and dogbone mount are deemed to be in OK condition. I think the problem I'm having has caused the tranny mount to wear out previously.
Are my only options having the gearbox taken out or is it possible to inspect for any damage through the starter mounting hole?
Thanks! Really need some insight on this.
The trouble is that at idle the engine irregularly vibrates, which can be felt throught the seat, wheel and pedals. The vibrations are a bunch of weaker jolts with some stronger jolts thrown in.
Had the engine checked at a couple of reputable garages. To exclude some possibilities:
- The ignition system is good, no ignition troubles.
- The fuel system is good. The injectors have been ultrasonic cleaned and work fine.
- No starting problems whatsoever.
- No engine speed fluctuation problems whatsoever.
As I currently see it, the vibrations are clutch and/or flywheel related. This engine has a single mass flywheel, FYI.
* The clutch engages quite high and usually when pulling away from a standstill, the engagement is accopanied by a slight jolt as the friction surfaces meet.
* When in 2nd gear and of course no handbrake on, the car can be manually pushed back and forth a couple of ft / 30cm. This should mean there is a large slack somewhere?
* There is a slight clatter sound, which dissapears when the clutch is pressed down. Excellent video here -> http://www.youtube.com/watch?v=bNBvnHlUkmY
* When I let off the gas, as car starts to decelerate, it jolts forward 3 times. No matter what gear or speed.
* When changing gears and not letting off the clutch really-really slow, it jolts one time.
* When rev-matching downshifts and hitting the revs a little bit too high AND letting off the clutch fast, it clunks and jolts several times. When hitting downshift revs too low, there is no clunking.
* I recently had the transmission mount replaced, whereas the engine and dogbone mount are deemed to be in OK condition. I think the problem I'm having has caused the tranny mount to wear out previously.
Are my only options having the gearbox taken out or is it possible to inspect for any damage through the starter mounting hole?
Thanks! Really need some insight on this.
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