NEED HELP! Glowing cat?

[tarry]

i hav put my car back together as i replaced the head gasket and i started it and it sounds rough as f**k it revs fine and pops abit then the revs die i looked under the car for exhaust leaks and the cat was glowin red hot, does any1 hav any ideas?

 

[-stu-]

it sounds like its over fueling is the belt timing right?

 

[DamoWales]

lol i read that then and clicked it thinking it was an actual glowing pussy cat lol!!

 

[philthy]

what are you feeding it?

 

[tarry]

the belt has nuthin to do with fuel injection, thats preset in the ecu for engine load an revs aint it

 

[tarry]

this is the cat glowin u can just see it

 

[philthy]

wow that looks quality,

u have temp gauges or anything? to see what they are saying? like your water or oil, sure you reconnected everything 100%?

 

[tarry]

im am sure its all connected bak correctly i dont know wats goin on it revs fine and comes out the back fine just sounds abit rough and the engine shakes a bit

 

[lemonnobby]

some kind of misfire? and unburnt fuel going in to cat and exploxing

 

[tarry]

thats wat my m8 finks it is but im not sure im goin to check the sparks 2moz

 

[browno]

the belt has nuthin to do with fuel injection, thats preset in the ecu for engine load an revs aint it

If the belt's out by a tooth or two though, the timing will be out and may well result in more unburnt fuel going through to the cat - causing it to get extra-hot...

 

[rory182]

cats reach 1100 degrees in some instances, so red hot aint that unusual for a cat.

 

[lemonnobby]

yep im going with above. above above lol.

 

[rory182]

aye i googled it, unburnt fuel will cause the substrates to glow red hot.

 

[tarry]

well i will check the spark 2moz if it isnt that i dont know wat to try lol

 

[Ryan k]

It could be a hole in your head gasket thats some times does same thing

 

[tarry]

where abouts in the head gasket coz its a new head gasket

 

[ClioGav]

i suggest a de-cat pipe for super flaming action

haha sorry i cant help you mate

 

[tarry]

lol

 

[Martin_172]

that would be quality with a decat lol.

on a serious note check the plugs and leads mate.

 

[Dan@SJM]

cam timing no doubt.

 

[SBV116]

cam timing no doubt.

Agreed, must be a tooth or 2 out, did you use a renault belt? if so did the white lines on the belt line up with the marks on the pulleys?

 

[tarry]

rite today i hav fond out that 1 of the clylinders isnt firing i hav check the plug and lead and they r fine so i dont know wats goin on

 

[rory182]

coil pack? how did you check the plugs? just unscrew at make sure they were sparking? if so fair enough, not coilpack.

 

[Ryan k]

where abouts in the head gasket coz its a new head gasket

The head gasket is under your valves they some times blow if you put it in wrong its easily done you need a new one!!

 

[G_F]

where abouts in the head gasket coz its a new head gasket

The head gasket is under your valves they some times blow if you put it in wrong its easily done you need a new one!!

Nah, doubt it.

Anyway, how did you conclude that a gasket failure would cause the cat to rise to extreme temps?

 

[Ryan k]

To much air getting drawn into engine and unburnt fuel is going into car and burning, if its used for to long a new cylinder head or it will cause meager damage to the engine.