Noble - misfiring under load...

[RedRobert]

Hi folks

My brother recently bought a 2003 Noble GT-R. Fine yock she is too!!!

Sometimes (not always), the car will have trouble idling and also when accelerating hard it will "misfire".

Some people say that water might have got into the fuel tank (especially after a wash) due to the position of the fuel cap.

Anybody any similar problems? Anyone know what causes this?

Cheers
Ró

[GTO400]

Idle problem when warm could be Lamda sensor, misfire under hard load usually plug gaps too wide.

[lotus160sport]

My car does the same when accelerating hard on the motorway its like the engine stalls for a split second then goes like stink, I have checked breather hoses, cleaned butterfly, changed temp sensor, spark plugs e.t.c has gone in this morning anyway so will let you know what it could be.
Greg.

[Ash M400]

I think you will find it is the breather pipe.

I had the same problem.

Simple to fix, do a search under my profile for similar, the cure is on the thread.

[RedRobert]

Great, I'll have a look.

Could he rule out plug leads then?

R

[Ash M400]

RedRobert said:

Great, I'll have a look.

Could he rule out plug leads then?

R

Not the plugs

[joust]

I assume it's a 3R?

If it is, as people say, idle and breather problems can be down to beather (see here http://www.pistonheads.com/gassing/topic.asp?h=0&a... dirty plugs / wrong gap. Very rarely it can one of the mini-coils that sit on top of the plugs breaking down as well.

J

[RedRobert]

joust said:

I assume it's a 3R?

If it is, as people say, idle and breather problems can be down to beather (see here http://www.pistonheads.com/gassing/topic.asp?h=0&a... dirty plugs / wrong gap. Very rarely it can one of the mini-coils that sit on top of the plugs breaking down as well.

J

Yes, it is a 3R

Thanks!

[NobleGuy]

Mine did this under full load - corroded coil ended up being the problem.
Begun to get worse and developed small misfire just before being changed.

Edited by NobleGuy on Wednesday 27th June 10:57

[AMG Merc]

I also had a coil-pack fail. Melted after day on Dunsfold track. They swap them over with each other to check.

[NobleNick]

RedRobert said:

Hi folks

My brother recently bought a 2003 Noble GT-R. Fine yock she is too!!!

Sometimes (not always), the car will have trouble idling and also when accelerating hard it will "misfire".

Some people say that water might have got into the fuel tank (especially after a wash) due to the position of the fuel cap.

Anybody any similar problems? Anyone know what causes this?

Cheers
Ró

Rob...

Did you get to the bottom of this. I think I have the same problem but I couldn't resolve it via the links(Didn't seem to work)

Can any one who posted help?Please

[RedRobert]

NobleNick said:

RedRobert said:

Hi folks

My brother recently bought a 2003 Noble GT-R. Fine yock she is too!!!

Sometimes (not always), the car will have trouble idling and also when accelerating hard it will "misfire".

Some people say that water might have got into the fuel tank (especially after a wash) due to the position of the fuel cap.

Anybody any similar problems? Anyone know what causes this?

Cheers
Ró

Rob...

Did you get to the bottom of this. I think I have the same problem but I couldn't resolve it via the links(Didn't seem to work)

Can any one who posted help?Please

Not yet. My bro too has difficulty in getting to the described areas etc etc - lack of knowledge I know! Hope someone will get back to this thread soon,

R

[NobleGuy]

I would definitely check the coil, but being a mechanical numtpy I couldn't tell you where it is.
It's a £40(ish) part so a cheap fix if it is that.

[NobleNick]

Re the comments above....could one of the regulars or contributors please help?

[V6GTO]

Have a look on www.GTO3.com, it's full of useful stuff.

Martin.

[gadgeroonie]

if its a 2.5 then it will have a set of leads and a coil that they all plug into

if its a 3.0 it will have a coil on plug set up and the coil is actually attached to the top of the spark plug

if you get water dripping into the rear clam it can make the coil(s) very damp and this can cause a problem

i suggest you take them out and see if there is water in there

the other possibility is that the car is exceeding the boost limit and the ecu is shutting the car down momentarily