What Durex?

Ropehead · Could Be A Chat Bot Joined: 02 May 2002 Karma :

i went out today for a blast on my tzr with my mate on his kawasaki 750,, all going nice thsn my bike started feeling abit slugish, though nothing of it, when we stoped at the light it staled!! never normaly does that! started up and off we went then it realy started to mess up no power and it was missing and backfireing!! i pulled up had a look nothing looked wrong, we managed to bumpstart it but it was missing and popping- no power.
it feels like therers no compresion, like when u dont screw your plug in properly!!

i'v checked the plug and it's got a good spark,
fule, air, 2 strokes getting through fine,
engine kicks over fine (i thought id cezed it at first u c )
all i can thing of is the head gasket,

What do u think

Cheers Guys Wink

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Head gasket going will either use loads of water and / or preasurise the colling system with loads of air.

Most likely is that a ring has failed (as the bike did not seem to nip up). Take a quick look, as the longer you leave it the more damage it can do.

The carb would probably not affect idle if it screwed up high speed running, and the ignition normall either works or it doesnt (well, 90% of the time)

All the best

Keith

Ropehead · Could Be A Chat Bot Joined: 02 May 2002 Karma :

Dan · Brolly Dolly Joined: 04 Feb 2002 Karma :

i had a problem like that a while back was just going along then just srated backfiring and stutering loosing opwer, took it in an it needed a new ignition coil, hope that helps. but keth knows what his talking about Laughing

Ropehead · Could Be A Chat Bot Joined: 02 May 2002 Karma :

It was not a ring on a second look, it was a circlip that holds the gudgin pin in that decided to make sweet love between my barrol and piston.
UUUUUUUUUUMM EXPENSIVE!!!!!!

what extra bhp will the skimed head give it's had 3mm off it and would u recomend a harder plug?? Razz

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

I had a circlip go once, damn dealer had used the wrong one on an Aprilia I bought!

Skimming the head will raise the compression, maybe enough (probably at 3mm) to cause detontation. It also affects the squish band, which is the area around the edge of the combustion chamber, normally designed to be almost non existant at TDC to force the mixture towards the centre of the combustion chamber.

I would be surpised if the TZR had enough space to take 3mm off without having to reprofile the combustion chamber as well

All the best

Keith