number of issues following scv change.

**dj_steve** · 3rd October 2018, 14:04

hello all,

trying to work through the new issues with my car that have manifested since changing the scv's

first up i have a massive coolant leak that is dripping down from the gearbox side of the engine block. wonderting if anyone knows of any pipes prone to breaking round their - this leak is very large and i have stripped back down to the egr cooler this morning and the coolant pipes going to it both seem to be fine from what i can see.

secondly the car now has a massive knock/misfire and engine is visibly shaking, i also have no boost at all and car seems to be almost limited to 2000-2500rpm.

NO FAULT codes are logged at all. nor is engine management or coil light on.(or at least no codes visible to my obd2 scanner have not tried opcom yet as i have only just recived my unit today)

any ideas for the cause of this anyone, part of me is half suspecting i still have a air lock in the fuel system but not sure if car would even run in that case.

i can hear what i think is a air or vacum leak but currently cannot trace it.

any suggestions appreciated, ill be getting back under the bonnet and jacking car up later to see if i can spot the leak at all

**dj_steve** · 3rd October 2018, 16:52

ok opcom is saying cyl 6 misfire, which would make sense for the way the car is running, but im also getting no boost and quite a bit of white smoke so thinking their may be water getting into the engine somewhere,
when i did the scv's i did remove the lower intake manifold from the bank of cylinders closest to front of car which i believe is 1 3 and 6. im wondering if i have got a leak from the egr cooler and water is getting into the intake that way as i did not replace the gasket (didnt originally plan on removing the lower intake).

any other ideas welcome

**gsmb** · 3rd October 2018, 19:10

I didn’t replace the gaskets on the manifolds either the first time I had them off but I did however make sure everything was clean (not saying you didn’t btw), I managed to split the hose to the egr cooler which gave me a bad coolant leak, I’ve since replaced it with a new one.

the only other problem I had after refitting everything (apart from forgetting to connect the fuel line) was I didn’t make sure that the connections to two modules on top of the engine were connected properly, the engine ran like crap before completely dying on me.

i did wonder now as I had some minor coolant leaks since that maybe replacing the hose clips as well, at some stage someone has put a coolant leak stop solution which has sorted out the small leaks I had.

**dj_steve** · 3rd October 2018, 19:13

Originally Posted by gsmb

I didn’t replace the gaskets on the manifolds either the first time I had them off but I did however make sure everything was clean (not saying you didn’t btw), I managed to split the hose to the egr cooler which gave me a bad coolant leak, I’ve since replaced it with a new one.

the only other problem I had after refitting everything (apart from forgetting to connect the fuel line) was I didn’t make sure that the connections to two modules on top of the engine were connected properly, the engine ran like crap before completely dying on me.

i did wonder now as I had some minor coolant leaks since that maybe replacing the hose clips as well, at some stage someone has put a coolant leak stop solution which has sorted out the small leaks I had.

ive tried swapping the two top modules around with no difference, opcom is saying cyl6 misfire and its come up twice with a p0235-50 turbo control module malfunction code also now.

do you know which pipe on the egr cooler split.

also car seems to be putting out a LOAD of white/grey smoke which im not certain if it is linked to the coolant leak or something worse (like turbo)

**gsmb** · 3rd October 2018, 19:28

The coolant hose under the egr cooler was split on mine, hose was old and didn’t being disturbed.

i only said about the modules as I’ve now had to cable tie on two of the connections.

**dj_steve** · 3rd October 2018, 19:31

Originally Posted by gsmb

The coolant hose under the egr cooler was split on mine, hose was old and didn’t being disturbed.

i only said about the modules as I’ve now had to cable tie on two of the connections.

ahh so your meaning possibily not seating correctly. hmmm i had not thought of that

**gsmb** · 3rd October 2018, 20:23

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i also had issue because I hadn’t connected the vac hose to the blue sensor at the front of the engine, in fact most of my problems is generally forgetting connect things back up lol

**dj_steve** · 3rd October 2018, 20:39

haha i know that blue sensor is connected as its been hardwired into my loom by somebody previous, and not very well at that. but i believe it only controls the swirl flaps anyway. i will take a look at the connectors again in the morning

**gsmb** · 3rd October 2018, 20:51

The picture isn’t very good, iPhone at night is a bit crap, if you would like I can take another one tomorrow that’s better quality

**dj_steve** · 3rd October 2018, 20:56

Originally Posted by gsmb

The picture isn’t very good, iPhone at night is a bit crap, if you would like I can take another one tomorrow that’s better quality

i can see which ones you have cable tied which look to be the right hand side one on each ecu, so ill give those connectors a check over in the morning