Sounds like the symptoms of valve timing chain skipped a tooth or two On Wed, Sep 12, 2018 at 7:52 PM Kevin Tsao <[email protected]> wrote:
> I’ve tried spraying starter fluid directly into the intake after removing > the carbs; the cylinders would fire sporadically, not consistently, and the > engine wouldn’t synchronize or keep running. There would be backfire > through the intake and also bangs through the exhaust. But again, not > consistently, and everything would stop the second I let go of the start > button. > > On Wed, Sep 12, 2018 at 4:46 PM Graham Rogers <[email protected]> > wrote: > >> Have you tried the starting fluid thing? Spray it in around carbs and >> boots or onto air cleaner, see what happens? >> >> On Wed, Sep 12, 2018 at 7:41 PM Kevin Tsao <[email protected]> wrote: >> >>> Fuel is reaching the carbs. I know this because when I hook everything >>> together and turn the drain screws on the carbs, gas drips out clean. >>> >>> On Wed, Sep 12, 2018 at 4:37 PM Graham Rogers < >>> [email protected]> wrote: >>> >>>> Are u getting gas to the carbs? Check the vacuum line from carb intake >>>> to petcock - to ensure fuel flow. Did you try just direct fuel to carbs >>>> with a funnel, with tank off? >>>> >>>> On Wed, Sep 12, 2018 at 7:32 PM Kyle Munz <[email protected]> wrote: >>>> >>>>> Like Graham says, it should still run. I'd look elsewhere for your >>>>> issue before major surgery. >>>>> >>>>> -Kyle >>>>> >>>>> >>>>> On Wed, Sep 12, 2018 at 6:29 PM Graham Rogers < >>>>> [email protected]> wrote: >>>>> >>>>>> I think it would still run on 100 plus compression >>>>>> >>>>>> On Wed, Sep 12, 2018 at 7:15 PM Kevin Tsao <[email protected]> wrote: >>>>>> >>>>>>> Hi all, just joined the group. I have 1983 Nighthawk 650 that I >>>>>>> purchased about 2 months ago. It was running fine up until one cold day >>>>>>> when it wouldn't start. Spark was fine, though I had to charge the >>>>>>> battery >>>>>>> after trying to start it too many times. I pulled the carburetors and >>>>>>> cleaned all the bowls, needles and jets (they weren't very dirty to >>>>>>> begin >>>>>>> with), that wasn't the problem. Engine would pop and fire when I sprayed >>>>>>> starter fluid directly into the intake, but would not really get >>>>>>> running. I >>>>>>> checked compression and they were 110, 125, 125, and 120 across the >>>>>>> cylinders, below the recommended 170 psi specified in the manual. So I >>>>>>> put >>>>>>> some oil in the spark plug hole for cylinder #1 (the worst one) and >>>>>>> compression jumped up to 175. So I'm pretty sure the problem is worn >>>>>>> piston >>>>>>> rings or cylinder walls. The bike only has 18,000 miles on it so I was >>>>>>> suspicious about this being the issue at first. If anyone knows how I >>>>>>> should tackle this job or have any advice I'd really appreciate the >>>>>>> help. >>>>>>> Should I just remove and replace the rings, or do I have to resize the >>>>>>> cylinder walls? Do I need a new head gasket? Anyone know where I can get >>>>>>> replacement piston rings? By the way, thanks for the manual, it really >>>>>>> helped my diagnose what I though was wrong. If anyone has any input, I'm >>>>>>> happy to hear it. Thanks. >>>>>>> >>>>>>> -- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "Nighthawk Motorcycle Lovers!" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>> send an email to [email protected]. >>>>>>> To post to this group, send email to >>>>>>> [email protected]. >>>>>>> Visit this group at https://groups.google.com/group/nighthawk_lovers >>>>>>> . >>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>>> >>>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "Nighthawk Motorcycle Lovers!" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to [email protected]. >>>>>> To post to this group, send email to >>>>>> [email protected]. >>>>>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Nighthawk Motorcycle Lovers!" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> To post to this group, send email to [email protected] >>>>> . >>>>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Nighthawk Motorcycle Lovers!" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Nighthawk Motorcycle Lovers!" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "Nighthawk Motorcycle Lovers!" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/nighthawk_lovers. >> For more options, visit https://groups.google.com/d/optout. >> > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/nighthawk_lovers. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. 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