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The issue could be a vacuum forming in the fuel tank (check vents), looking at the yamaha site, it doesn't look like you have any active cooling (fan/radiator) so unlikely to be that. There may also be an air-hose leaking somewhere or possibly a vacuum leak from the intake manifold.


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ELF or Engine Life Factor is a calculated number: ELF = 100,000/Max RPM x CR where: RPM = Revs per minute and CR = Compression ratio It is supposed to indicate the longevity of an engine by reducing the "number" by how fast the engine is able to run and what its numerical compression ratio. I see some major flaws in this thinking. First, it doesn't ...


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There's a couple of scenarios that come to mind. Originally, I was going to write this as a comment, but it would simply be too much text. Others, please feel free to give reasons why any of these isn't the answer. Clutch is Failing (manual trans only) Generally, when your clutch fails, it only catches partially. Even if you give it a whole lot of gas, ...


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I wouldn't personally, I mean for example they try to make EFI a big deal. Here in NZ they were promoting Holdens/Potanics that they had EFI and that's how old now? So just guy with cars you know that have a good reliability behind them like Toyota or Nissan. If your looking at a performance car then read up on reviews etc... heaps of resources to look for ...


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Running without an exhaust will cause the bike to run a little leaner. if its already lean you may be overheating the engine (correct air/fuel mix also cools the cylinders) which in turn will affect the oil which will also affect the engine. Watery oil to me means one thing, its broken down so is thinner than it should be and not lubricating how it should. ...


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The first thing I think of when I hear 'watery oil' is a bad head gasket. That could cause a lot of the issues you are experiencing. we have escaped like noise from the motor Can you explain what that means? I wonder if it could be something simple like an oil change, all fluids or maybe even needs more water. It might be a good idea to change ...


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It's not unusual for a second radiator to be present behind the main radiator, often to cool the transmission fluid. If these fluids are mixing (water and transmission fluid), then both radiators have been damaged and are leaking their fluids together. Both radiators will need to be removed and repaired. Sometimes coolant will appear in engine oil because ...


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I take it from the wording, English is not your first language. To answer you outright, there is no reason to mix coolant and oil, under no situation where a vehicle is concerned. If you are actually asking why oil would be fed through something containing coolant (radiator or such), the reason would be simple in that it is cooling the oil. By cooling the ...


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Regular vehicles can handle 10% ethanol without too much of an issue. This is the normal blend (E10) which is required by the US government (I don't know what is specified elsewhere in the world). Unless your vehicle was specifically setup as a "flex-fuel" vehicle, it won't be able to deal with more than that. Ethanol fuel itself is usually an 85% ...


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If your lambda sensor(oksygen sensor) is broken, it normally got symptoms like. when idle the rpm jumps back and forth, could even choke the engine in some cases! High fuel usage, bad smell from the exhaust, and generally runs bad. you might experience that your car is running smooth when cold, but when getting some heat its back to how it was, this is ...


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I've always had good luck with the kerosene method. Which is adding about a quart of kerosene to the oil and brining the temperature of the engine up to running temp for 5 minutes then drain. Then I use Mobil 1 full synthetic oil and a new decent filter. After 5000 miles I change the filter. Then at 10,000 miles I change the oil and the filter again. My '86 ...


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if you engine strugle when is cold and start fine when hot and the car run fine after with no lost of power I will check this few thing like = First check you baterry 12.7 v or above good battery under 12.3 V get a new one . then is very likely your starter motor not turning quick enough . if you car is 10 year old plus I will recomend to check you ...



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