engine basics - cold exhaust gasses?

[yalan 0]

can any one tell me what can make a 16v engine's exhaust gasses to blow hot & cold?

 

Just been to see a car which has a bit of a bouncey idle (when the engines been running 25 mins or so). When I put my hand in the exhaust, the temperature of the gasses went quite clearly from hot to cold to hot every time the idle bounced.

 

I can't even imagine how this is possible from a hot engine.

 

??? cheers!

[stevemac 0]

Sounds like it has some "engine problems" matey :shock:

[yalan 0]

Sounds like it has some "engine problems" matey :shock:

 

yeah - but I like it ....... !

 

- financial suicide methinks!

 

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[stevemac 0]

yalan, is that a piccy of the car with the problems ??

 

If it is - don't touch it with a bargepole :wink:

 

Merc Cosworth parts will cost you a fortune :shock:

[yalan 0]

even from your guys? - yeah, that is the one. Asking £2K

I was under the impression that it was 90% 190 stock parts......

.... or is it the other 10% (engine parts) which'll break the bank ?

[stevemac 0]

Take my advice m8 (based on 15 year's main dealer experience) Cosworth 190E 2.3-16v will totally break your finances. Especially as this car has unknown engine problems. In good nick, the 2.3-16v "Cosworth" is a very nice car to drive & quick too 8)

 

190E 2.5-16v - very disappointing to drive in comparrison to the 2.3. The 2.5 is not a Cosworth power plant - it's a Mercedes copy. Engine capacity was increased in an attemp to get a similar power output. On paper, the 2.5 is a quicker car - in practice this is not the case, the 2.3 is way better.

 

The 16v 190's share surprisingly few parts with the rest of the 190 range - even most of the body panels are different, as are a good proportion of the interior ones.