C5 HDi, exhaust puffing from injector
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KevMayer
- Posts: 1051
- Joined: 12 Sep 2003, 22:01
- x 2
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Old-Guy
- (Donor 2025)
- Posts: 1813
- Joined: 11 Sep 2008, 12:08
- x 22
I have seen a Merc Vito engine with the cam case full of coke as a result of injector blow-by! No viable way to clean the head - van went for breaking.
A word of caution about using chemicals like oven-cleaners to remove carbonised oil/fuel. Strong alkalis (caustic chemicals) vigorously attack light (aluminium) alloys. They will 'instantly' destroy machined surfaces. The worst possible thing is caustic soda (sodium hydroxide).
No such problems with steel, but do watch out for rubber/neoprene. Nylon/PU/PTFE should all be proof against most cleaners.
Best to use a purpose-made cleaner.
A word of caution about using chemicals like oven-cleaners to remove carbonised oil/fuel. Strong alkalis (caustic chemicals) vigorously attack light (aluminium) alloys. They will 'instantly' destroy machined surfaces. The worst possible thing is caustic soda (sodium hydroxide).
No such problems with steel, but do watch out for rubber/neoprene. Nylon/PU/PTFE should all be proof against most cleaners.
Best to use a purpose-made cleaner.
2012 Subaru Forester - capable but no magic carpet
2011 Grand C4 Picasso VTR+ 1.6HDi - not missed!
1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - sadly missed
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm)
2011 Grand C4 Picasso VTR+ 1.6HDi - not missed!
1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - sadly missed
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm)
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RustyUK
- Posts: 93
- Joined: 12 Feb 2008, 22:35
- x 2
Interesting. All in all, an eye-opening experience, and thankfully one that worked out cheap. I'll keep a close eye out for further exhaust 'blow-by'.
Seems there's solutions out there to stuck injectors too. I feel a little more at ease knowing that! Maybe that scary yahoo-answers post suggesting the 2.2HDi engines are seriously flawed by design and may already be scrap is an outright gross exaggeration. It did appear to be written by a young dealership mechanic...
Not really a breed of skilled or honest workers I've had much luck with in the past.
Seems there's solutions out there to stuck injectors too. I feel a little more at ease knowing that! Maybe that scary yahoo-answers post suggesting the 2.2HDi engines are seriously flawed by design and may already be scrap is an outright gross exaggeration. It did appear to be written by a young dealership mechanic...
Not really a breed of skilled or honest workers I've had much luck with in the past.