Page 1 of Is there a mechanic in the house?

I know, I know DVD forum - Mechanics...?

This is the story, Astra 1.7 Turbo Diesel (Isuzu Engine Maybe) L reg going on the cheap, Problem is there seems to be NO compression yet the engine will turn over. Im thinking maybe Head Gasket, Piston/Rings, Cracked Block or Cambelt jumped a tooth or two to be the likely suspect, Anyone got any other possible causes for this problem?

Those lot @ motornet.ie wont answer my question, I tend to get the feeling thay dont like the english much!

This item was edited on Wednesday, 5th June 2002, 15:16

I have a P reg of the same car. It could be any of what you said or injectors. Best to get a mechanic to look at it.

They may be able to help at the car forum below

http://www.clickmotors.co.uk/

Thanks for the link, Posted a question on there but It doesnt seem to have very many users so I shant hold me breath for a reply!


Thanks Dusty

Firstly, P plate Astra wont have the same engine. Later Astra`s have Vauxhalls own TD - low blow turbo D (engine code X17DTL), as opposed to the earlier Isuzu ones.

If the Isuzu unit has been overheated, chances are the head is warped (from experience, these warp v v v easily). I seem to recall that we had a problem with these units a while back, had a run of them for some reason coming in having overheated, and not only did it warp the head, it can knacker the piston rings as well. (used to work at local Vaux garage).

IMHO unless you know the history and therefore why it wont run (and presumably you dont and that is why you are posting here), avoid. Expensive engines to fix. Best bet is probably a low miles Jap import engine - Exchange & Mart prob best place to find ad for this, or a recon.

HTH ;-)

Cheers for the reply cotter.

Id just about made up my mind on this motor when I priced up engines for it, GM Low Blow £795 + VAT And the Isuzu engine £500 + VAT to rich for me I can tell you!

Really did think the guy I spoke to was having a laugh when he asked me if the engine was "Low Blow" Cant say Ive ever heard of Low Blow before, Can someone explain, Please?


Cheers Dusty.


Just to add, He wanted £400 for the motor....... MIGHT have been worth a shot if it was more like £200!!! !!! It did have a bit of test on it, Alloys Etc...... But £400 is £400 afterall

This item was edited on Thursday, 6th June 2002, 20:41

Dusty

`Low blow` is the common name for the later, Vauxhall TD engine, as opposed to the Isuzu unit which will be fitted to the car you looked at. Reason for the name `low blow` is that the turbo is a `low pressure` turbo as opposed to a `high pressure`. Turbo pressure can be worked out from the engine code - X17DTL. X = emissions controls. 17 DT = 1.7 Diesel Turbo L = low blow turbo.

Not sure about the engines fitted to the current range - been out of the trade for a couple of years now, but certainly when the Vectra 2.0 TD engines were introduced, there were two versions - low pressure turbo (X20DTL) and high pressure (X20DTH). High pressure = more speed.

Enough of my geek speak though.

HTH