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Post by critch on May 24, 2014 11:07:04 GMT 1
Got a Vectra 1.9 (z19dth) Asked to fit blanking plugs instead on swirl valves on inlet manifold as the control rod had came off. Had a look and its very very sluggish low down until about 2500 rpm and misfiring too Told him would look into misfire before starting to dismantle manifold Quick cylinder balance showed no4 made very little change to engine revs. Checked deviation and no4 and no3 out of tolerance I haven't got a set of leak off bottles so do you think looking at that its enough to Condem injectors or do think should check leak off too?  |
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Post by Karl on May 24, 2014 14:29:12 GMT 1
I think it's still a good idea to check spill rates
Don't you think you should fix the air intake correctly also ?
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Post by critch on May 24, 2014 16:51:08 GMT 1
Yes mate told him rather than mess about trying to clean manifold best bet would be replacing it.
Because as you know chances are it's going to be quite full with crud and I don't wanna spend 2/3 hours stripping and cleaning to find I can get it clean enough to get blanks to sit in and seal correctly
So rather charge just once and do job complete and know it will be ok
May not see him again though was on about selling car instead
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Deleted
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Post by Deleted on May 24, 2014 17:24:13 GMT 1
Spares or  repairs |
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Post by jeoff82 on May 24, 2014 23:01:25 GMT 1
Injector 3&4 look mullered
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Deleted
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Post by Deleted on May 25, 2014 13:58:51 GMT 1
Injector 3&4 look mullered ok why is cyl 3 asking for less fuel ?? |
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remmington
Apprentice
Owns Spark Eroder
Posts: 4,957
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Post by remmington on May 25, 2014 16:45:57 GMT 1
I have done this Vectra-Zafira manifold job a few times now.
Plus I have re-done the job wen it went wrong for another garage.
The cam-belt has to come off to get the diesel pump out of the way to get to a bolt which holds the manifold on.
DO NOT TIGHTEN THE PUMP PULLEY UP WITH AN AIRGUN!
The Vectra we had to re-do had a cracked pulley and chucked the cam-belt off. No bent valves thou, broke the followers instead.
I would also get some bottles on the injectors before I started spending money on it.
Has yours got a DPF?
I have had loads and loads of problems with DPF's on these causing power loss.
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Post by critch on May 25, 2014 17:25:54 GMT 1
I have done this Vectra-Zafira manifold job a few times now. Plus I have re-done the job wen it went wrong for another garage. The cam-belt has to come off to get the diesel pump out of the way to get to a bolt which holds the manifold on. DO NOT TIGHTEN THE PUMP PULLEY UP WITH AN AIRGUN!The Vectra we had to re-do had a cracked pulley and chucked the cam-belt off. No bent valves thou, broke the followers instead. I would also get some bottles on the injectors before I started spending money on it. Has yours got a DPF? I have had loads and loads of problems with DPF's on these causing power loss. I did recommend a cambelt and water pump also. I've done job before on and insignia 2.0 sane setup. by using two ten mm bolts to pin fuel pump pulley. It has got a dpf it's an estate but it drives fine once gets over sort of about 2600 rpm Dpf saturation was only around 18% if I remember correctly. |
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Deleted
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Post by Deleted on May 25, 2014 21:28:10 GMT 1
I have done this Vectra-Zafira manifold job a few times now. Plus I have re-done the job wen it went wrong for another garage. The cam-belt has to come off to get the diesel pump out of the way to get to a bolt which holds the manifold on. DO NOT TIGHTEN THE PUMP PULLEY UP WITH AN AIRGUN!The Vectra we had to re-do had a cracked pulley and chucked the cam-belt off. No bent valves thou, broke the followers instead. I would also get some bottles on the injectors before I started spending money on it. Has yours got a DPF? I have had loads and loads of problems with DPF's on these causing power loss. I did recommend a cambelt and water pump also. I've done job before on and insignia 2.0 sane setup. by using two ten mm bolts to pin fuel pump pulley. It has got a dpf it's an estate but it drives fine once gets over sort of about 2600 rpm Dpf saturation was only around 18% if I remember correctly. What a job ! trouble with crd's is there can often be multiple issues as one causes another, |
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Deleted
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Post by Deleted on May 28, 2014 19:37:44 GMT 1
Injector 3&4 look mullered ok why is cyl 3 asking for less fuel ?? Anyone ? as jeoff isnt interested |
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Post by Karl on May 28, 2014 21:12:20 GMT 1
ok why is cyl 3 asking for less fuel ?? Anyone ? as jeoff isnt interested It's attempting to achieve equilibrium against cylinder 4 There's likely to be nothing wrong with cyl 3 |
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Post by critch on May 28, 2014 23:29:30 GMT 1
ok why is cyl 3 asking for less fuel ?? Anyone ? as jeoff isnt interested Wasn't sure wether it was actually a fault or wether trying to counter number 4 If it even works like that. Told him put a full set in it With it having done 107000 Not heard back from him though |
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Post by Karl on May 28, 2014 23:38:23 GMT 1
Cylinder balance readings are the injectors adding or subtracting fuel quantities
Based on calculations the PCM gets from ckp signal and other perimeters
In a perfect engine they would be 0
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Post by critch on May 29, 2014 0:22:24 GMT 1
Cylinder balance readings are the injectors adding or subtracting fuel quantities Based on calculations the PCM gets from ckp signal and other perimeters In a perfect engine they would be 0 Yeah I know its adding or subtracting fuel. But would no3 be reading less to counter no4 adding more Or a seperate issue? |
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Post by Karl on May 29, 2014 7:29:22 GMT 1
Cylinder balance readings are the injectors adding or subtracting fuel quantities Based on calculations the PCM gets from ckp signal and other perimeters In a perfect engine they would be 0 Yeah I know its adding or subtracting fuel. But would no3 be reading less to counter no4 adding more Or a seperate issue? Umm Now you've got me thinking should it be cyl 1 reacting to cyl 4 Either way I've always been told never to condemn a negative reading ? |
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