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Old 5th May 2021, 17:01   #1
JOHNNYPLUMSTEAD
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Default low pressure on one piston: New Engine?

My 1.8 turbo SE 05 has been diagnosed with not enough pressure in one piston. Only 73,000
Is it better to replace the engine or have new piston rings put in?
What is best to do or cheapest?
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Old 5th May 2021, 17:24   #2
Yorkshire GOC
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You don't necessarily need a new engine - probably a cracked piston which does happen on the turbo-you need to take her to an engine repair garage to take the head off and replace/repair your piston and they should replace all the piston rings and relap the valves. I had low compression on a cylinder and the car was sorted by the garage.

Saying that where i live it is a lot cheaper cost wise than London.
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Old 5th May 2021, 17:25   #3
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Are you sure it's not a valve problem?
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Old 5th May 2021, 17:32   #4
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Can you do a leakdown test
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Old 5th May 2021, 17:36   #5
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Pm MIckyboy
Lovely chap and extremely helpful. Not too far and he's good at this sort of thing
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Old 5th May 2021, 17:50   #6
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Quote:
Originally Posted by livinginthepast View Post
Can you do a leakdown test
A cylinder leakage test will confirm if valve or piston related
The good news is you can repair either without removing the engine

Last edited by TourerSteve; 5th May 2021 at 17:53..
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Old 5th May 2021, 18:31   #7
JOHNNYPLUMSTEAD
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Quote:
Originally Posted by Yorkshire GOC View Post
You don't necessarily need a new engine - probably a cracked piston which does happen on the turbo-you need to take her to an engine repair garage to take the head off and replace/repair your piston and they should replace all the piston rings and relap the valves. I had low compression on a cylinder and the car was sorted by the garage.

Saying that where i live it is a lot cheaper cost wise than London.
i MIGHT HAVE TO COME TO YORKSHIRE LOL
THANKS FOR YOUR REPLY
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Old 5th May 2021, 18:33   #8
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Quote:
Originally Posted by TourerSteve View Post
A cylinder leakage test will confirm if valve or piston related
The good news is you can repair either without removing the engine
WOW I WAS FEARING THE WORST. I had a complete clutch £800 back in December . Thanks i feel better already.
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Old 5th May 2021, 18:36   #9
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Quote:
Originally Posted by livinginthepast View Post
Can you do a leakdown test
The chap said he'd done a pressure test and one of the cylinders was as low as 4. if that makes sense?
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Old 5th May 2021, 21:54   #10
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Quote:
Originally Posted by JOHNNYPLUMSTEAD View Post
The chap said he'd done a pressure test and one of the cylinders was as low as 4. if that makes sense?
It does make sense but there two or three things that can give you that reading. You need to find out which.---
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