Author Topic: Bought my first mk4 golf  (Read 23343 times)

Offline paradisiac82

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Re: Bought my first mk4 golf
« Reply #200 on: 02 May 2016, 18:55 »
My biggest issue at the momen is the MPG seems low (or maybe my expectations were too high). I did 11 miles, mostly 60~70mph dual carriageway driving, and TRIP said average of 40mpg and then 20 miles of mixed road driving and TRIP read average of 32mpg, was just hoping for more I guess being a diesel. Also it only feels like the turbo is helping from around 1700/1900-2500/3000 RPM, either side of that it feels non existent. It also doesn't like low revs, and seems very noisy (like a rumbling) could this be the DMF (or SMF as it has been suggested this might of been changed/converted)?
 
Another problem, which has been there from day 1 is, the car struggles to start when cold. It sounds like it wants to start but doesn't, or at least it revs a little then cuts out, or you just hear the starter motor noise but doesn't start at all. 9/10 it will start if you have your foot on the accelerator whilst trying to start it, it starts, revs are around 800-950 (even with foot hard down on accelerator) for about a second or 2 before it starts to rev.

Offline lemski

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Re: Bought my first mk4 golf
« Reply #201 on: 02 May 2016, 19:01 »
Mpg seems OK compared to mypassat tdi. Which is around 37 average.

Still do t have a clue with that starting though. Glow plugs was discussed?

If you disconect the cacum from the egr does it start and rev?

Offline paradisiac82

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Re: Bought my first mk4 golf
« Reply #202 on: 02 May 2016, 19:05 »
Mpg seems OK compared to mypassat tdi. Which is around 37 average.

Still do t have a clue with that starting though. Glow plugs was discussed?

If you disconect the cacum from the egr does it start and rev?

Yeh had new glow plugs. Was a bit gutted as read people getting 55+ MPG from theirs and I can't get anywhere near that even with conservative driving. What hits me the most is pulling away, from 1st, 2nd and through to 3rd its between 7mpg and 18mpg if I'm lucky, its only when I get to 4th I can hit 30+mpg

Offline lemski

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Re: Bought my first mk4 golf
« Reply #203 on: 02 May 2016, 19:10 »
Hmmm. Try unplug that vac see if it changes or not. Unplugged the butterfly should stay open so would rule if there a problem there. Might also account for the low mpg

Offline paradisiac82

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Re: Bought my first mk4 golf
« Reply #204 on: 02 May 2016, 19:18 »
Hmmm. Try unplug that vac see if it changes or not. Unplugged the butterfly should stay open so would rule if there a problem there. Might also account for the low mpg

Where is the plug? Will it throw up an EML?

Offline lemski

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Re: Bought my first mk4 golf
« Reply #205 on: 02 May 2016, 19:20 »
Itsthe vac line that goes to the egr. Itll throw one eventually like we siscussed but not for the fault finding of cold start

Offline paradisiac82

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Re: Bought my first mk4 golf
« Reply #206 on: 02 May 2016, 19:23 »
Itsthe vac line that goes to the egr. Itll throw one eventually like we siscussed but not for the fault finding of cold start

Ah the hose or the electric plug (if there is one)? If the hose, will stuff come out of it (do I need to tuck it somewhere or put it in a bottle to catch stuff)?

Offline lemski

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Re: Bought my first mk4 golf
« Reply #207 on: 02 May 2016, 19:25 »
The little vac hose. And nothing will come out. There a plug further back on a valve but you dont have to unplug it

Offline paradisiac82

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Re: Bought my first mk4 golf
« Reply #208 on: 02 May 2016, 19:27 »
The little vac hose. And nothing will come out. There a plug further back on a valve but you dont have to unplug it

OK, what does this hose do? as in, if this lets it start first time without pressing on the accelerator, whats the issue coz it has had a new EGR in the last 8 months

Offline lemski

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Re: Bought my first mk4 golf
« Reply #209 on: 02 May 2016, 19:36 »
The butterfly not working properly. If you manually operaate the lever it should stall the car when in the xlosed position as no air can get to the engine.
So if its sticking nearly closed it wont rev up until the butterfly operate