Question about 2006 Volkswagen Touareg

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Low compresion on one cylinder on 2.5 taureg

Low compresion on one cylinder on 2.5 tauareg diesel engene

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Low compression can be caused by either worn or stuck piston rings or by a valve seating problem (which can be in the valve seat, a worn cam or in the rocker/push rod assembly between them). The way to determine is to start with a cool engine (meaning the rings are dry), run compression test on the cylinder in question (or all if you like, I would) then put a little bit of oil in the cylinder/cylinders and re-run the test. If the compression comes up it is the rings. If not it is in the valve not seating properly. Of course after you put oil in the cylinders when you start the car don't be alarmed at it smoking for a couple of minutes until the oil burns out. That's normal.

Posted on Nov 13, 2009

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2003 suzuki aerio won't start. No check engen lite as before. Charged battery changed relays. Check engen light was on car ran.car died tonight did the same thing and no check engen light


wont crank or cranks fast but will not start???????????????????
what engine is there, we cant guess them , ever. gas or diesel?
the CEL must glow key on then go out running, that is normal.
you need to stop thinking the CEL is magic nor the ECU behind it
a $100000 artificial intelligent entity.
IT'S NOT. (but the scan tool is very good to use now, if it dont start)
  1. ever get a tune up this decade??????? like spark parts an filtes, no? and timing belt ignored?
  2. fuses good.?
  3. spark good on all cylinders?
  4. starts with test fuel.? yes ,no.?
  5. yes, then fuel loss or flooding is it flooding?
  6. no, spark is bad or engine bad, since spark is ok, then engine and if engine is bad, then the timing belt slipped, due to #1
no engine stated so cant really wax too smart, can I.

dah line up...
engines.
1.3 L I4; 1.5 L I4; 1.6 L I4; 1.8 L I4; 2.0 L I4; 2.3 L I4; 1.4 L Diesel I4

got one of those?/?????????????????????????????

in USA the 2.0L is king but you never said country,.... so......
the J20 is cam chain drive, good for 250k miles, fresh oil all the time.


now guess 2,???????????????????????
battery goes dead , engine will not crank.
dash lamps dim, or dead, head lights dim or dead.
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or my starter is silent or its , just clicks
that is a DEAD battery, left head lights on, charge it now. fix phantom drains.
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Nov 21, 2015 | Suzuki Cars & Trucks

1 Answer

My Mahindra balero 2.5 diesel won't start i have check the diesel supply and injectors it is spraying correctly according to my knowledge if there are diesel and pressur it should start


also needs cylinder compresion and air intake , first check the air intake pipe work and air filter , do they glo plugs work ?then have the cylinder compression checked

Nov 15, 2014 | Cars & Trucks

1 Answer

Low compresion engine spotering


dump a little oil in the cylinder and recheck compression if no change pull off the cylinder head and check the valves

Jun 10, 2012 | 1996 Nissan Sentra

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My 1981 isuzu pup Diesel won't statrt it was running fine but one day did not start,,,, checked if spark plugs had electricity and it has/ don't know what to check or do to start it back on


??diesel with spark plugs??? check you ate getting fuel desels don't have spark pluge the fire of compresion they might have glow plugs but I think if it is a gas engen with spark plugs and you put disel in it there is your problem

Oct 24, 2010 | 1986 Isuzu Pickup

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95 5.2 in grand cher. one cylinder low compresion even with new heads doesn"t use oil either like bad rings do


Try a leak down test, similar to a compression test, but fills the cylinder with air and regulates the amount of air escape. This may help.

Dec 09, 2009 | 1995 Jeep Grand Cherokee

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Low compresion in 2 cylinders


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1 Answer

2002 duramax will heat up underload but not at idle any ideas why


No diesel I have ever owned will heat up to operating temp while idling. I have had semi's and dump truck and a Dodge with a Cummings turbo diesel. If you don't idle a diesel up to around 1200 rpm while sitting the combustion chamber temperature will drop because the diesel does not ignite fully at low rpm. You may also notice after an extended period of idling 1/2 hour or more that when you pull away the exhaust will be whitish blue because of the unburnt diesel fuel sitting on top of the rings. Also extended low idle will wash down the cylinder walls with unburnt diesel and remove the oil from lubricating the cylinders and rings. Hope this helps you understand why your diesel won't heat up while idling. Mike

Jan 06, 2009 | 2002 GMC Sierra

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