Question about 1998 Yamaha GTS 1000 ABS

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Bike can't go pass 8000 RPM RANGE?

For some reason after my 2004 gts 1000 bikes is running for awhile the bike hesitates or stops at 8000 RPMs and it can't go pass this. Can't go pass the 8000 RPM range at any speed. It doesn't happen right away. The bike needs to be running for awhile maybe a good half an hour of highway and stop and go traffic before the problem occurs.

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Hi Zizi, I don't think you have a 2004 GTS1000, unless it's been in a crate for a few years. Anyway, it's almost certainly sounds like a fuel fault, but two things to check.

I assume the EFI light doesn't come on (orange one) and you have good sparks, but FYI the ignition coils corrode inside where the HT wires go. There is also a 16 pin multiblock connector above the alternator that is prone to going green with corrosion and all the sensor inputs/injector outputs go through this plug. The HT caps are prone to breaking down, replace them with SD05F NGKs, as they are a lot cheaper than Yamaha OEM stuff ( the OEM boots fit on so making a waterproof seal at the head again).

Fuel checks, you have a fuel pump in your tank, with a filter gauze. You also have a fuel filter to the side of the tank, and a return circuit controlled by a fuel regulator at the end of the fuel rail. The odd thing with your symptons is it takes half an hour or so...before you get the fault. If it was fuel starvation, it would happen sooner, so maybe something like the coil is getting hot etc. Is the engine rougher?

You can also look on the www.gtsclub.org website, but you'll have to register.

Regards
Mike

Posted on Jan 11, 2009

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Just something to think on, how many miles it's done & do u get dirty fuel there, as a clogged/dirty fuel filter can restrict the amount of fuel flow/feed & more often than not affects things in the top ranges(highest feed rate) first. Common problem on cars. PS...just had a look at the '04 manual(page 3-16) & u still have a fuel filter mesh as well in your model like ours so there maybe something(particals of muck) suspended in your fuel that take a while of constant fuel flow to be drawn down into the screen/mesh before they start to effect it's running. Just a thought is all.

Posted on Nov 10, 2008

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