Hi.
I'm a newbie here so please go easy on me. Vehicle in question is a 2008 VW Transporter T5 van with 84ps engine which has done 29,000mls. Please ignore the fact it's a van...it's the engine I need to sort out...hence the reason I'm posting on this generic Mk5 year appropriate forum.
This is a 1.9 TDi Pumpe Deuse engine rated at 62kw or if you like 84ps. In the main the engine "seems" to run well but there's a couple of problems.
Whilst moving through the gears I get a slight flat spot in 1st & 2nd.....I think it's probabaly there in 3rd/4th, but not so noticeable due to higher speed and momentum. In first the flat spot is more noticeable and happens about 1500rpm, and in 2nd the flat spot is slightly less noticeable and happens about 2500rpm. Also, and this is significant.........when driiving above 2,500 rpm in any gear I hear this sort of slight misfire.....like an old manifold gasket blowing slightly, if you know what I mean.
I booked the van into the dealer this week, and they thought the timing may have moved after 29K and would check this ! I've now collected the van and they tell me they have retimed the engine. The change is not significant, but I do feel/hear the engine running slightly better but the same underlying problem is there. I'm pretty handy with tools but don't have any specialised equipment. I've checked all the high pressure side of things for leaks........intake system, intercooler pipework, etc, and the vacuum side.....no obvious leaks on any of this stuff. I've also checked the diaphram/linkage for the variable turbo vanes.......and linkage moves relatively freely. However, can you confirm THIS about linkage rod for variable turbo. When engine is off, rod is at longest, extented state........when engine is idling, rods is at shortest.....and when engine revs are raised to say 2500/3000 rod length reduces.......is this correct I thought it might be the other way round.
I should add, when the engine is revved whilst parked there's no funny noises...it's only when under load these symptoms appear. Don't let me blur your thoughts but I'm steering towards lack of air/fuel under load.
Sorry this has been such a long first post but I'm really concerned about my engine. Hope someone can give me a steer on this.
Many Thanks
Eddie
I'm a newbie here so please go easy on me. Vehicle in question is a 2008 VW Transporter T5 van with 84ps engine which has done 29,000mls. Please ignore the fact it's a van...it's the engine I need to sort out...hence the reason I'm posting on this generic Mk5 year appropriate forum.
This is a 1.9 TDi Pumpe Deuse engine rated at 62kw or if you like 84ps. In the main the engine "seems" to run well but there's a couple of problems.
Whilst moving through the gears I get a slight flat spot in 1st & 2nd.....I think it's probabaly there in 3rd/4th, but not so noticeable due to higher speed and momentum. In first the flat spot is more noticeable and happens about 1500rpm, and in 2nd the flat spot is slightly less noticeable and happens about 2500rpm. Also, and this is significant.........when driiving above 2,500 rpm in any gear I hear this sort of slight misfire.....like an old manifold gasket blowing slightly, if you know what I mean.
I booked the van into the dealer this week, and they thought the timing may have moved after 29K and would check this ! I've now collected the van and they tell me they have retimed the engine. The change is not significant, but I do feel/hear the engine running slightly better but the same underlying problem is there. I'm pretty handy with tools but don't have any specialised equipment. I've checked all the high pressure side of things for leaks........intake system, intercooler pipework, etc, and the vacuum side.....no obvious leaks on any of this stuff. I've also checked the diaphram/linkage for the variable turbo vanes.......and linkage moves relatively freely. However, can you confirm THIS about linkage rod for variable turbo. When engine is off, rod is at longest, extented state........when engine is idling, rods is at shortest.....and when engine revs are raised to say 2500/3000 rod length reduces.......is this correct I thought it might be the other way round.
I should add, when the engine is revved whilst parked there's no funny noises...it's only when under load these symptoms appear. Don't let me blur your thoughts but I'm steering towards lack of air/fuel under load.
Sorry this has been such a long first post but I'm really concerned about my engine. Hope someone can give me a steer on this.
Many Thanks
Eddie
