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[Webby the Bear]

Ps, tonight I got home and thought I'd take advantage of the darkness and checked for voltage sparks (arcing) and I chucked on a few revs and found no exhaust smoke in the engine bay.

As that's the case is it worth checking for exhaust leaks between manifold and O2 sensors as I thought I would have seen the smoke rise up through the engine bay?

 

Your problem with this approach is with the highlighted words.  Unless your engine is in really bad shape and burning a lot of oil, or coolant, or very excessive fuelling, there isn't anything to see in exhaust gases, especially up at that end of the system.  Only visible portion is condensed water, which only tends to show at the cool end of the system, when the system is cold, and when the air outside is cold.

Thanks mate.

Got a bit of a problem then...if it doesn't show itself how do I check for leaks?  There's no noise coming direct from the manifold area that I can hear (slight ticking from the top end but I'm on that with the Wynns  )

[cem_devecioglu]

Ps, tonight I got home and thought I'd take advantage of the darkness and checked for voltage sparks (arcing) and I chucked on a few revs and found no exhaust smoke in the engine bay.

As that's the case is it worth checking for exhaust leaks between manifold and O2 sensors as I thought I would have seen the smoke rise up through the engine bay?

 

Your problem with this approach is with the highlighted words.  Unless your engine is in really bad shape and burning a lot of oil, or coolant, or very excessive fuelling, there isn't anything to see in exhaust gases, especially up at that end of the system.  Only visible portion is condensed water, which only tends to show at the cool end of the system, when the system is cold, and when the air outside is cold.

partially agreed.. Abiton, when my exhaust system had a small hole , it disturbed the fuel so that avg was 1-1.5 lt/100 km higher and it was no bigger than a pin head.. (and engine was not using  oil) and hard to find it..

[Webby the Bear]

I take it your leak was visible, Cem? Or did you locate the leak/hole via other means? 

[cem_devecioglu]

and if we are talking about a 13 year old car its easy to query about the degree of sensors health.. especially lambdas,maf..
 
they both work on a chemical surface which can degrade.. 

[cem_devecioglu]

I take it your leak was visible, Cem? Or did you locate the leak/hole via other means? 

by eyes when we rev.. but even the exhaust shop couldnt see it..

[cem_devecioglu]

Webby do you have EGR ?

[Webby the Bear]

Webby do you have EGR ?

Yes mate, cleaned out last weekend. Really noticeable difference in acceleration (thanks again to Martin). So I'm going to do what Kev says and do the brim test again before I go any further I think 

[Webby the Bear]

.....just trying to gain as much knowledge as poss. at this stage  and thanks for your input... very much appreciated

[cem_devecioglu]

Webby do you have EGR ?

Yes mate, cleaned out last weekend. Really noticeable difference in acceleration (thanks again to Martin). So I'm going to do what Kev says and do the brim test again before I go any further I think 

 
block it and check the consumption..

[Webby the Bear]

if i block it cem can i put it back if i wish later on?

[cem_devecioglu]

if i block it cem can i put it back if i wish later on?

yep.. you will use a metal sheet gasket which will block the exhaust gas passages.. but dont disconnect..
 
 

[Webby the Bear]

if i block it cem can i put it back if i wish later on?

yep.. you will use a metal sheet gasket which will block the exhaust gas passages.. but dont disconnect..

thanks cem 

[cem_devecioglu]

if i block it cem can i put it back if i wish later on?

yep.. you will use a metal sheet gasket which will block the exhaust gas passages.. but dont disconnect..

thanks cem 

and dont over torque I break mine

[Webby the Bear]

if i block it cem can i put it back if i wish later on?

yep.. you will use a metal sheet gasket which will block the exhaust gas passages.. but dont disconnect..

thanks cem 

and dont over torque I break mine

 

[martin42]

il bring over my metal work tools webby when we do the other work and blank it off