RE: Re: sick 'roc

[Jonas Karlsson <jkarlsso@metabolex.com>]

Well here's an update/more info.

first off, injector seals are new, both cam timing and ignition timing 
have been triple checked and are on the mark. 

The problem is most noticable when driving, there is very little power.  
It takes forever to get up to speed. Also is has a kind of "shuddering" 
of the engine that is constant, rpm dependant, and more intense the more 
torque I put to the wheels. It feels like a cylinder is missing/not 
giving power.  At idle, this shudder is still there, but *barely* 
noticable.  

Furthermore, the exhaust is really stinky. Not sure if it's unburnt fuel 
or oil, or what. And the  exhaust get hot really quick. 

I am dropping it off at ND tonight, and hopefully they can figure it out. 


I am fearing broken piston rings. Hoping otherwise. But well see. 

Jonas

85 Sickrocco :-(


Wm. Josiah Erikson wrote:
>I'd check your ignition timing. Overadvanced ignition timing could 
possibly
>cause this. Does it limp at idle, too? Check your injectors, injector
>seals... did you check them out when you took the head off?
>    Good luck!
>    -Josiah
>




>Jonas Karlsson wrote:
>
>> My scirocco is sick :-(
>>
>> Last week it suddenly (first noticed it after start up 
>following a 3-4
>> hour rest) developed a scary problem. It has no power, and it 
>shudders
>> when torque is put to the wheels (from the engine, like a 
>cylinder is
>> missing). Also it seems to get hot real quick (not overheating, 
>just
>> heats up much quicker. After just a 5 minute drive, the exhaust 
>is
>> "crackling" and "ticking" the way it usually does after a good 
>long
>> drive).
>>
>> I checked plugs, wires, injector flow, and compression. Plugs 
>and wires
>> were fine (both are also 1 month old), injectors all flowed 
>with a nice
>> pattern, compression showed one cylinder as having 20 psi lower 
>than the
>> other 3, which were at 180. I put a tablespoon of oil into the 
>cylinder
>> to see if it changed, but it did not. I decided to pull the 
>head. Upon
>> inspection, it appeared as if there was exhaust blow-by at the 
>cylinder
>> with low compression. Also the cylinder head showed some 
>pitting where
>> the head gasket seats. The head had already been resurfaced to 
>give a
>> higher CR, so I decided to try to find another head at the 
>junkyard. I
>> had the new head resurfaced (gave it a 9.5:1 CR). Put it all on 
>last
>> night. Started her up at 11:00. Problem is still there. WTF.
>>
>> Needless to say I'm frustrated and going through 'rocco 
>withdrawal. I
>> called ND and they will take a look at it on Friday. Tonight I 
>will take
>> another look to see what I can see. I will check the 
>compression again.
>>
>> Any ideas/suggestions as for what to look out for. Fuel seems 
>to be
>> getting there, I havn't checked for spark, but the plugs, 
>wires, cap,
>> rotor are all really new (<4months old). What else. Timing is 
>on the
>> mark. Cam timing is a possible source of problem. I have an 
>adjustable
>> cam sprocket to counter the retard caused by the shaved head. 
>I'm pretty
>> sure that the timing lined up, but it is entirely possible that
>> somewhere it is one tooth off. What are the symptoms of that? 
>Could that
>> be it?? I'll triple check tonight.
>>
>> Please help me ressurect my rocco.
>>
>> TIA
>>
>> Jonas
>>
>> 85 Sickrocco  :-(
>>




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