Z20Let Boost Issues
#1
Posted 16 April 2019 - 10:03 PM
Could of been a few things but I thought I would swap the turbo as I have a known working one that I took of my vx after installing vxr unit.
After the swap it seemed to cure the problem but a couple days later it stopped boosting again. Appears to be slightly different symptoms. I ordered new boost control solenoids (one on turbo and one on inlet manifold) and no difference. The turbo has since started to screech a bit? One manifold bolt seemed a bit loose and tightened but scared to over tighten.
Because I havent had it long and my vx has been tinkered a bit I dont even know what it should feel like anymore! But its not right.
Im open to suggestions but their are many suggestions and dont know where to go next / revisit.
I want to take to a garage but dont feel confident in back street garages. So i’m just checking if anyone fancies a troubleshooting afternoon with me lol
#2
Posted 17 April 2019 - 06:39 AM
Always good if you can figure out why the first turbo failed when fitting another. Do you know if you have a good oil flow to/from the turbo?? Sounds a bit suspicious if its starting making a noise after a few hours use.
#3
Posted 17 April 2019 - 07:27 AM
A friend suggested that and I undone the oil feed and oil started coming out so thought it was ok
#4
Posted 17 April 2019 - 07:53 AM
can you describe the boost issue
No boost? spiky, on then loose boost as the revs climb?
Sounds like it may be a leak to vacuum issue? If it makes no boost I would start at the wastegate
#5
Posted 17 April 2019 - 10:04 AM
#6
Posted 17 April 2019 - 10:26 AM
#7
Posted 18 April 2019 - 02:14 PM
Well I dont actually know if the old turbo did fail...
A friend suggested that and I undone the oil feed and oil started coming out so thought it was ok
Shouldn't that be the oil return?
#8
Posted 29 June 2019 - 09:30 AM
Came off accelarator and was expecting it not to work when I went back on and now boosting and centre exhaust silencer ‘exploded’ and blew out the side. So sounds like most zafira gsi s do. So the silencer failed and blocked exhaust hence no boosting. Good news
#9
Posted 30 June 2019 - 10:22 PM
So I had a blowing exhaust and got worse because hanger was broken and scraping on my drive way. Driving down dual carraigeway and heard a massive bang and sh*t flying behind it.
Came off accelarator and was expecting it not to work when I went back on and now boosting and centre exhaust silencer ‘exploded’ and blew out the side. So sounds like most zafira gsi s do. So the silencer failed and blocked exhaust hence no boosting. Good news
Lol *great news
That made me laugh you crazy loon
#10
Posted 31 July 2019 - 10:34 AM
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