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  #11  
Old 20th April 2012, 09:33 PM
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Quote:
Originally Posted by IT View Post
I'm not scared to sort out a valve problem, as that can be done with the block in situ,
You've lost me, Ian. The cylinder head will still need to be pulled to replace a burnt-out valve.
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  #12  
Old 21st April 2012, 12:03 PM
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Quote:
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You've lost me, Ian. The cylinder head will still need to be pulled to replace a burnt-out valve.
Yeahhh Ian!

















I haven't got a clue really
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  #13  
Old 21st April 2012, 12:42 PM
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Quote:
Originally Posted by Nollywood View Post
You've lost me, Ian. The cylinder head will still need to be pulled to replace a burnt-out valve.
But that does not require engine to be pulled out.
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  #14  
Old 21st April 2012, 12:47 PM
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Quote:
Originally Posted by ainarssems View Post
But that does not require engine to be pulled out.
Yes, thats where I was going with this....

Probably my terminology being a newbie at oily stuff

If its a valve problem, I only need remove the offending head, which can leave the rest of the engine in place...

If its pistons, then that seems like more major surgery.....
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2011 A7 Sline, 2001 A2 1.4 Tdi Black, 2002 A2 1.4 Tdi Silver, 2006 A8 4.2 Tdi Blue,
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Everything Else

1989 Subaru Justy, 1986 Vauxhall Cartlton 2.0 GL, 1985 Vauxhall Carlton 2.2 CDi, 1987 Ford Sierra XR4x4, 1983 Vauxhall Senator, 1985 Vauxhall Senator 3.0i, 1997 Polo Saloon, 1997 Peugeot 306 1.9 TDi, Ford Sierra Sapphire 2000E, 1990 Subaru Justy, 2000 Subaru Impreza, 2000 Subaru Impreza RB5, 1993 Range Rover LSE, 2005 VW Bora, 2003 Skoda Superb, 2003 VW Passat V6 4 Motion, 1996 Peugeot 106, 2000 Range Rover 4.0, 2019 Tesla Model 3 Performance
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  #15  
Old 21st April 2012, 01:26 PM
PsYcHe PsYcHe is offline
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Pistons... Ooh...

If I was paying, it'd be as cheap with an engine swap probably, but seeing as you'll be getting mucky. Should be able to do it with the engine still in the bay, but it'll be a fiddle.
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  #16  
Old 21st April 2012, 06:34 PM
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The plot thickens.

Removed some more stuff out of the way for access, bought a new compression tester, and tested all cylinders, and both banks.

I have 2 cylinders off, both opposite each other on seperate banks, both reading a value of around 4 bar, compared to the 9/10 bar on the healthy cylinders.

Defo an engine swap / breaker now, but what are the odds of having two cylinders broken..... ???
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The 17 year old Driver Wagon 2015 Skoda Citigo Monte Carlo. Alloys, Power steering, Aircon, Leccy windows, Sat Nav, bluetooth, central locking, cup holders, 59 whole bhp. Million times better than my first car. Well jealous.....

The First 20 Audis:

2001 D2 4.2 QS Silver, 1997 D2 S8 Silver, 1999 D2 4.2 Silver, 2002 D2 S8 Dolphin Grey,
2003 C5 RS6 Blue, 1998 D2 S8 Black, 2000 D2 4.2 QS/S8 Ming Blue, 2003 D3 4.2 Ming Blue,
2005 B7 S4 Blue, 2006 D3 3.0 Tdi Black, 1999 D2 4.2 Silver, 2003 D3 4.2 LPG Crystal Blue,
2000 D2 S8 Silver, 2007 3.0 Tdi Q7 Black, 2009 B8 S4 Black, 1998 D2 S8 Agate Grey,
2006 D3 4.2 Tdi Blue, 2006 D3 S8, 2007 Q7 3.0 Tdi, 2006 C6 S6,

The Second 20 Audis:

2011 A7 Sline, 2001 A2 1.4 Tdi Black, 2002 A2 1.4 Tdi Silver, 2006 A8 4.2 Tdi Blue,
2007 4.2 Tdi Q7, 2006 S4 Cab Silver, 2010 RS6 Saloon Black , 2007 TT Roadster,
2010 A8 D4 4.2 Silver, 2006 C6 A6 2.7 Tdi Quattro, 2000 D2 4.2 QS/S8 Ming Blue (again), 2008 Q7 4.2 Black,
2009 C6 RS6 Saloon Daytona Grey, 2001 Fully Loaded A2 Tdi, 2006 Avant S6 Black, 2007 VW Caravelle Exec Black (almost an Audi)
2009 TT Roadster Daytona, 2015 Q7 4.2 tdi lava grey, 2002 GmbH D2 demonstrator, 2006 D3 A8 LWB 4.2 Tdi Black

Most Recent Audis:

2001 A2 1.4 Tdi Black, 2007 4.2 FSi Q7 ABT Blue, 2016 S5 Coupe Launch model, 2004 S4 B6 Cabriolet, 2016 Q7 Sline White, 2006 Q7 4.2 FSi Black, 2012 Q7 Sline+ 4.2Tdi White, 2008 Blue Audi S8

Everything Else

1989 Subaru Justy, 1986 Vauxhall Cartlton 2.0 GL, 1985 Vauxhall Carlton 2.2 CDi, 1987 Ford Sierra XR4x4, 1983 Vauxhall Senator, 1985 Vauxhall Senator 3.0i, 1997 Polo Saloon, 1997 Peugeot 306 1.9 TDi, Ford Sierra Sapphire 2000E, 1990 Subaru Justy, 2000 Subaru Impreza, 2000 Subaru Impreza RB5, 1993 Range Rover LSE, 2005 VW Bora, 2003 Skoda Superb, 2003 VW Passat V6 4 Motion, 1996 Peugeot 106, 2000 Range Rover 4.0, 2019 Tesla Model 3 Performance
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  #17  
Old 23rd April 2012, 06:30 PM
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I don't have much experience with the LPG fueled engines, but I've seen where an injector sticks open, and will flood the cyc. with fuel.


This washes the rings, and drops compression, and of course, the super rich mix does not burn, so you get a misfire.

Wet plug and low compression were what I found. Added some oil, it brought compression up, but as soon as the engine was run, it misfired again.

Pulled the injector, swapped it with another, and the "bad" cyc moved...

Sonic cleaned all the injectors, and it "cured" the problem for that vehicle. If not, I was ready to replace the bad/stuck injector. (But upon pulling them, they were all filthy, so new fuel filter, sonic cleaned the injectors, keeping the bad one seperate so it did not get confused with the other 5 on this I6 engine.)

The coil and plug was fine, the valves and pistons were fine. Rings were fine, but washed with too much fuel, they don't seal up well at all.

I would imagine if you ran the engine at a high enough speed/RPM, that the right air fuel ratio would be reached, and the misfire would go away. (Depends on how stuck open the injector is.)
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  #18  
Old 23rd April 2012, 07:40 PM
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Hmmm - Thanks for that. Thats very interesting.

I do now have 2 cylinders off, and I just cannot get my head around the miniscule probability that I have two failed cylinders.

More interesting is that whilst they both read only 4 bar of pressure, only one of them has a wet plug. The other is dry.

I wonder thus if I might have one failed valve/piston, and one injector problem....

Time for some more spanner work me thinks...
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The Daily Town Car - 2023 Tesla Model Y Performance. Black with Black. Giant ipad screen, huge sunroof, 4 wheel drive, Tow bar, lots of ooomph and made in China, so actually built properly unlike the Californian ones.

The Family Wagon - 2018 Tesla Model X. Black, 7 Seats, Towbar, Homelink, Enhanced Auto pilot with Summon and self park, Heated front seats, CCS Charger upgrade, MCU2 Upgrade, Falconwing Doors, Self opening / closing doors, Netflix, Spotify, toys, Air suspension, alcantara roof + lots of other stuff......

The 17 year old Driver Wagon 2015 Skoda Citigo Monte Carlo. Alloys, Power steering, Aircon, Leccy windows, Sat Nav, bluetooth, central locking, cup holders, 59 whole bhp. Million times better than my first car. Well jealous.....

The First 20 Audis:

2001 D2 4.2 QS Silver, 1997 D2 S8 Silver, 1999 D2 4.2 Silver, 2002 D2 S8 Dolphin Grey,
2003 C5 RS6 Blue, 1998 D2 S8 Black, 2000 D2 4.2 QS/S8 Ming Blue, 2003 D3 4.2 Ming Blue,
2005 B7 S4 Blue, 2006 D3 3.0 Tdi Black, 1999 D2 4.2 Silver, 2003 D3 4.2 LPG Crystal Blue,
2000 D2 S8 Silver, 2007 3.0 Tdi Q7 Black, 2009 B8 S4 Black, 1998 D2 S8 Agate Grey,
2006 D3 4.2 Tdi Blue, 2006 D3 S8, 2007 Q7 3.0 Tdi, 2006 C6 S6,

The Second 20 Audis:

2011 A7 Sline, 2001 A2 1.4 Tdi Black, 2002 A2 1.4 Tdi Silver, 2006 A8 4.2 Tdi Blue,
2007 4.2 Tdi Q7, 2006 S4 Cab Silver, 2010 RS6 Saloon Black , 2007 TT Roadster,
2010 A8 D4 4.2 Silver, 2006 C6 A6 2.7 Tdi Quattro, 2000 D2 4.2 QS/S8 Ming Blue (again), 2008 Q7 4.2 Black,
2009 C6 RS6 Saloon Daytona Grey, 2001 Fully Loaded A2 Tdi, 2006 Avant S6 Black, 2007 VW Caravelle Exec Black (almost an Audi)
2009 TT Roadster Daytona, 2015 Q7 4.2 tdi lava grey, 2002 GmbH D2 demonstrator, 2006 D3 A8 LWB 4.2 Tdi Black

Most Recent Audis:

2001 A2 1.4 Tdi Black, 2007 4.2 FSi Q7 ABT Blue, 2016 S5 Coupe Launch model, 2004 S4 B6 Cabriolet, 2016 Q7 Sline White, 2006 Q7 4.2 FSi Black, 2012 Q7 Sline+ 4.2Tdi White, 2008 Blue Audi S8

Everything Else

1989 Subaru Justy, 1986 Vauxhall Cartlton 2.0 GL, 1985 Vauxhall Carlton 2.2 CDi, 1987 Ford Sierra XR4x4, 1983 Vauxhall Senator, 1985 Vauxhall Senator 3.0i, 1997 Polo Saloon, 1997 Peugeot 306 1.9 TDi, Ford Sierra Sapphire 2000E, 1990 Subaru Justy, 2000 Subaru Impreza, 2000 Subaru Impreza RB5, 1993 Range Rover LSE, 2005 VW Bora, 2003 Skoda Superb, 2003 VW Passat V6 4 Motion, 1996 Peugeot 106, 2000 Range Rover 4.0, 2019 Tesla Model 3 Performance
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  #19  
Old 24th April 2012, 11:25 AM
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Sorry for off-topic question......

what's a "Hertz" audio upgrade when it's at home?

Zip
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  #20  
Old 24th April 2012, 02:28 PM
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If it's the one I'm thinking of, then it's aftermarket stereo gear... along the lines of Bose, etc.
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