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Starting issue, turns but won't fire - low compression

umdiecker

Guest
Just for anyone having problems with their Seat Ibiza Cupra TDi PD 160bhp; I had a glitch on my car the other week. I drove the car a few yards across the car-park and turned it off. When I came to start the car again 1 hr later, the engine turned but nothing fired.

The garage found low compression on all cylinders and thought that it might be a problem with (so begins a list):
- the fuel injectors, but this would be weird that all injectors went at once
- cam belt slipped a tooth or two, causing lack of compression at that point in the cycle or complete engine failure and mashed head/valves
- fuel pump failure
- ingress of water, causing issues (possibly a cracked cylinder head)
- blown head gasket

After hours of searching, a random find was with the air/throttle flap stuck closed, preventing any air getting in. If you have a similar problem, it's worth checking this first! No parts needed other than a clean and lube of the unit. Luckily not a brand new cylinder head!
:)
 

great_kahn

Spooge
Nov 19, 2009
2,415
2
Leicestershire
Just for anyone having problems with their Seat Ibiza Cupra TDi PD 160bhp; I had a glitch on my car the other week. I drove the car a few yards across the car-park and turned it off. When I came to start the car again 1 hr later, the engine turned but nothing fired.

The garage found low compression on all cylinders and thought that it might be a problem with (so begins a list):
- the fuel injectors, but this would be weird that all injectors went at once
- cam belt slipped a tooth or two, causing lack of compression at that point in the cycle or complete engine failure and mashed head/valves
- fuel pump failure
- ingress of water, causing issues (possibly a cracked cylinder head)
- blown head gasket

After hours of searching, a random find was with the air/throttle flap stuck closed, preventing any air getting in. If you have a similar problem, it's worth checking this first! No parts needed other than a clean and lube of the unit. Luckily not a brand new cylinder head!
:)


Cheers for info. Maybe should be added to a sticky somewhere.
 

DEAN0

Old Git
Feb 1, 2006
5,438
1
425
Preston - UK
After hours of searching, a random find was with the air/throttle flap stuck closed, preventing any air getting in. If you have a similar problem, it's worth checking this first! No parts needed other than a clean and lube of the unit. Luckily not a brand new cylinder head!
:)

Didn't think the diesels had a throttle flap !

Are you talking about the ANTI SHUDDER VALVE ? - the one located with the EGR.
 

umdiecker

Guest
Didn't think the diesels had a throttle flap !

Are you talking about the ANTI SHUDDER VALVE ? - the one located with the EGR.

Just relaying what the garage said, but I'm sure you're probably right. All I know is that ii was a cheap fix, not a new head!! :D