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19-01-18, 02:40 PM | #1 |
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running problems
Hi
I just bought a gen1 sv that's had been sitting for 6 months.....starts fine,idles ok....but fluffy and back fires when trying to rev..also back fires a bit of petrol out of the rear carb with the air box off....I have cleaned the carbs and checked the plugs...and checked for air leeks,all seem ok.....what else could it be? thanks |
19-01-18, 04:45 PM | #2 |
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Re: running problems
New plugs, new tank full of fuel, remove and clean the choke plungers, lube the choke plunger cables and the throttle cables and linkage, synchronise the carbs with a vacuum gauge, clean/replace the air filter.
Then let us know how it runs. |
20-01-18, 11:20 AM | #3 |
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Re: running problems
Hi
I have done all the above.......does a dodgy regulator make a bike run rough?? |
20-01-18, 12:33 PM | #4 |
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Re: running problems
Worth checking the carb rubbers for cracks too.
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20-01-18, 03:07 PM | #5 |
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Re: running problems
It could be old plug caps and HT leads, that can cause rough running as soon as there is any load on the spark.
Also crud in the carbs, it might be sucking gunk up and blocking a jet as soon as the fuel starts to move a bit quicker. |
20-01-18, 04:38 PM | #6 | |
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Re: running problems
Quote:
Mine is not getting above 13.5V at any condition and barely 13V lights on. Fortunately I have a MOSFET one sitting waiting to be fitted, it was a case of when I get round to it, now my hand has been forced.
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"Artificial Intelligence is no match for natural stupidity" Last edited by embee; 20-01-18 at 04:39 PM. |
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20-01-18, 06:24 PM | #7 | ||
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Re: running problems
Quote:
Quote:
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20-01-18, 09:00 PM | #8 |
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Re: running problems
Thanks guys.......embee,what is the mosfet one?....is it better....do you have a link...thanks
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20-01-18, 09:10 PM | #9 | |
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Re: running problems
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Here's a link. But check how many plug connections your RR has, some of the last curvies have 2, some have one. Mine had two, a late 2002 curvy http://www.electrexworld.co.uk/cgi-b...5%2ehtml#aRR85 http://www.electrexworld.co.uk/cgi-b...rch&PR=-1&TB=A
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21-01-18, 01:10 AM | #10 |
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Re: running problems
https://en.wikipedia.org/wiki/MOSFET
basically the type of semi-conductors used in the RR. They have lower volt drop across them and produce less heat etc, better reliability and more stable voltage regulation typically. A lot of bikes use them now, they "usually" have 2 sockets on them, one with 3 wires for the alternator supply, one with normally 2 wires for + and - output (may possibly have a third but usually just 2). I got mine used off ebay, there's no hard and fast guide for which bike model to go for. The MOSFET ones usually have a code on them which will be FH010 or FH012 or FH020 etc. The higher numbers usually mean greater current capacity I think, or later versions. You'll usually need to alter the wiring a bit on your bike to suit, normal 6.3mm spade connectors will go straight on the contacts as long as you know which is which, or you can get the correct sumitomo (?) sockets. Try a search for Shindengen on the net for info, Eastern Beaver can be a useful source of info and connectors if you want to go that route (I haven't).
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"Artificial Intelligence is no match for natural stupidity" Last edited by embee; 21-01-18 at 01:12 AM. |
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