Raptor 1000 and serious misfire and backfire problems

[Deleted User 4464]

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[andybaggies]

The first problem was when temperatures didnt raise over 60'c and that was fixed with a thermostat and water temperature sensor change.

The accepted method of resolving this was to 'insert' a resistor in the engine temperature wiring that fooled the ecu into thinking the engine was hotter than it actually was. The ecu would then chnage the fuelling map an smooth out any rough running see viewtopic.php?t=3790&start=45

When the engine is hot, I get loud backfire everytime after accerelation, around 6k and 3k on deacceleration

This usually points to exhaust leaking at one or more of the unions - the rear down pipe to collector tubes is a common place for it to fail. Failing that the pair valve shenangigans can cause backfires especially if after market cans are fitted. It's best to remove the complete mechanism & blank off their connection to the header see https://www.ebay.co.uk/itm/265068451185 ... 2749.l2649

And also there seems to be a delay and misfire when revving up around 2k-3k even in neutral gear and stationary.

Leaping to the conclusion that's it's the ecu seems a bit drastic to me at least before checking the ignition and fuel systems. The wires to the ignition coils, as well as being a pain to get to, easily corrode/become loose and need checking. I've had a failed coil before now. The fuel pump needs checking & if the bikes being standing for some time the fuel may have gone off. Something simple like the vent hole in the fuel cap might be the culprit - it may even be related to the previous (exhaust) item.

[Deleted User 4464]

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[andybaggies]

See https://www.raptorchapter.org.uk/viewtopic.php?t=3879

A web search for Suzuki TL1000R will come up with some lost cost options for, just, the pump itself so there will be a little more work adapting it to the complete assembly.