2k caddy no bottom end power

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Jk@oec
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Engine size/power: 1.9 TDI (74bhp)

2k caddy no bottom end power

Post by Jk@oec » Tue Mar 16, 2021 6:49 pm

Hi all, I hope I am in the right area for this, being newbie i’m sure someone will put me straight.
A while back I helped a friend's son purchase a 2k Caddy with the BLS engine. It went well enough except after a journey it would pump coolant out the overflow. After numerous tests i diagnosed head gasket and sure enough was putting compression from no.1 into the water jacket. Did the repair which included a camshaft kit and injector re-seal. Started and ran fine but could not get it up our driveway (generous slope) without stalling. On the flat it would go but needed 2 or 3 downshifts to get it up moderate hills. No codes showing.
Checked compression - all about 39b, checked and adjusted torsion to -0.5, checked operation of turbo actuator - ok, checked vac pressure - 25mb at reservoir, pressure tested charge air system found leaks at intercooler and turbo silencer, replaced both. Checked fuel lift pump - (marginal), tested tandem pump, found low pressure on load and leaky seals, re-sealed so pressure now 8b + at pump about 1b in return. Had turbo rebuilt. Checked exhaust for blockages - clear.
Bought VCDS, the turbo pressure seems a little low and even hesitant at low revs otherwise not sure what some parameters are telling me!
Still no codes.
So here I am thinking I am no good at this any more :(
Anyone got any suggestions? Burn it and claim the insurance not being an option. :D

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Doc
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Re: 2k caddy no bottom end power

Post by Doc » Tue Mar 16, 2021 7:04 pm

Hi JK, welcome to the forum.
With VCDS, there's lots of parameters you can check.
I don't have a BLS engine to hand to plug into but first up injector idle stabilization is worthwhile checking/monitoring all the way from stone cold to 70° coolant temperature.
Then, actual V's specified boost, MAF and intake temperature on a run can give useful data.
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2013 Caddy with EA888 Gen3 2.0TSI DSG, Superplus MSP19 , Caddy4 rear lights, Polo GTI (mk7 style) steering wheel, Relentless Tuning front coilovers, Audi A6 S-Line front seats, Boxster fronts & GTI rear Brakes, 3D Colour Premium dash cluster, Caddy life arm rest, Motexion bulkhead, MIB head unit


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Jk@oec
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Posts: 7
Joined: Tue Mar 09, 2021 1:45 pm
Engine size/power: 1.9 TDI (74bhp)

Re: 2k caddy no bottom end power

Post by Jk@oec » Tue Mar 16, 2021 7:56 pm

Many thanx Doc will give it a go tommorrow.

Scoobysrt
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Re: 2k caddy no bottom end power

Post by Scoobysrt » Tue Mar 16, 2021 8:40 pm

Silly question especially to someone like you but was the oil system flushed out?
2016 Starlight blue highline 2.0 tdi - stainless side bars - DubUnit remap 180/190 bhp ish - st x lowering kit - golf R cadiz 18" wheels - rear wiper delete - ProVan600 interior led light - red painted calipers - Kenwood headunit - sequential side repeaters - vcds hex net pro

caddy4mo
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Engine size/power: 2.0 TDI (140bhp)

Re: 2k caddy no bottom end power

Post by caddy4mo » Wed Mar 17, 2021 10:45 am

Check your air filter as well mate. No air in, no air out :D

Jk@oec
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Posts: 7
Joined: Tue Mar 09, 2021 1:45 pm
Engine size/power: 1.9 TDI (74bhp)

Re: 2k caddy no bottom end power

Post by Jk@oec » Tue Apr 06, 2021 1:10 pm

Doc wrote:
Tue Mar 16, 2021 7:04 pm
Hi JK, welcome to the forum.
With VCDS, there's lots of parameters you can check.
I don't have a BLS engine to hand to plug into but first up injector idle stabilization is worthwhile checking/monitoring all the way from stone cold to 70° coolant temperature.
Then, actual V's specified boost, MAF and intake temperature on a run can give useful data.
Hi Doc, thanks for your previous input. Since then i did what you suggested with the log runs. The boost run showed a terrible turbo lag. The actual would not reach the spec until 3k plus revs. I took it to a mapping centre near me as they had a dyno etc. They could find no problem with the turbo controls and sent me off (£114 lighter) saying it was a duff turbo. I contacted the people who overhauled the turbo who said it really cannot be as it was fully adjusted and testedok. They suggested an exhaust blockage. I have just done another run with the exhaust removed at the manifold. No change.
I have logged the fuelling as you suggested but am not sure what i should be looking for here. Any guidance would be much appreciated.

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Doc
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Re: 2k caddy no bottom end power

Post by Doc » Tue Apr 06, 2021 1:26 pm

Have you got a table of boost request Vs actual for your run? N75 duty cycle on there too would be useful.
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2013 Caddy with EA888 Gen3 2.0TSI DSG, Superplus MSP19 , Caddy4 rear lights, Polo GTI (mk7 style) steering wheel, Relentless Tuning front coilovers, Audi A6 S-Line front seats, Boxster fronts & GTI rear Brakes, 3D Colour Premium dash cluster, Caddy life arm rest, Motexion bulkhead, MIB head unit


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Jk@oec
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Posts: 7
Joined: Tue Mar 09, 2021 1:45 pm
Engine size/power: 1.9 TDI (74bhp)

Re: 2k caddy no bottom end power

Post by Jk@oec » Tue Apr 06, 2021 5:00 pm

Yes i have one taken today. It has acc posn, engine speed, boost request and boost actual. No N75 though could do one with that as well if required. Since my first post i have changed the n75.
I have the fuelling one which looks a bit odd if that helps.
Last edited by Giddy on Tue Apr 06, 2021 5:25 pm, edited 1 time in total.
Reason: removed unnecessary quote of previous post

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Doc
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Posts: 15484
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Engine size/power: 2.0TSI EA888 Gen3
Location: Monaghan, Ireland & Leicestershire, UK

Re: 2k caddy no bottom end power

Post by Doc » Tue Apr 06, 2021 6:52 pm

Post up what you've got.
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2013 Caddy with EA888 Gen3 2.0TSI DSG, Superplus MSP19 , Caddy4 rear lights, Polo GTI (mk7 style) steering wheel, Relentless Tuning front coilovers, Audi A6 S-Line front seats, Boxster fronts & GTI rear Brakes, 3D Colour Premium dash cluster, Caddy life arm rest, Motexion bulkhead, MIB head unit


All posts written by me are the intellectual property of the caddy2K forum and I do not consent to copying or redistribution of any sort

Jk@oec
Caddy2k Groupie
Posts: 7
Joined: Tue Mar 09, 2021 1:45 pm
Engine size/power: 1.9 TDI (74bhp)

Re: 2k caddy no bottom end power

Post by Jk@oec » Thu Apr 08, 2021 12:23 pm

Hi Doc, Ive replaced the exhaust and re-run the two tests. I have included the boost control duty cycle on the boost run. in each case the run was commenced at 25mph in 3rd gear and the revs maxed out at 3.2k.
Not sure how I go about getting this to you. I thought I could send you the csv files but not sure how.
Last edited by Giddy on Thu Apr 08, 2021 5:37 pm, edited 1 time in total.
Reason: removed unnecessary quote of previous post

User avatar
Doc
Not God, just a bellend
Posts: 15484
Joined: Thu Jan 01, 1970 1:00 am
Engine size/power: 2.0TSI EA888 Gen3
Location: Monaghan, Ireland & Leicestershire, UK

Re: 2k caddy no bottom end power

Post by Doc » Thu Apr 08, 2021 12:34 pm

Send the logs in an email, I'll graph them and post the results.
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2013 Caddy with EA888 Gen3 2.0TSI DSG, Superplus MSP19 , Caddy4 rear lights, Polo GTI (mk7 style) steering wheel, Relentless Tuning front coilovers, Audi A6 S-Line front seats, Boxster fronts & GTI rear Brakes, 3D Colour Premium dash cluster, Caddy life arm rest, Motexion bulkhead, MIB head unit


All posts written by me are the intellectual property of the caddy2K forum and I do not consent to copying or redistribution of any sort

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