Re: [Nighthawk Lovers] 1983 Nighthawk 650 help

2019-04-24 Thread aajawo
Thanks for your thoughts. I do expect to have the top-end redone. But who knows maybe I'll get lucky. I'm going to give it to go with seafoam and I'll report back. Cheers. On Wed, Apr 24, 2019, 11:13 AM Amanda Wurzer wrote: > My dad's a seasoned and certified motorcycle mechanic for over 40

Re: [Nighthawk Lovers] 1983 Nighthawk 650 help

2019-04-24 Thread Amanda Wurzer
My dad's a seasoned and certified motorcycle mechanic for over 40 years and recommends the same thing. However, he is also the type to recommend stop leak in radiators and has blown engines because of thinking like that. Dad's not dumb by any means but that doesn't mean his advice is always right

Re: [Nighthawk Lovers] 1983 Nighthawk 650 help

2019-04-24 Thread bobshel...@gmail.com
 Sent from Yahoo Mail on Android On Wed, Apr 24, 2019 at 11:12 AM, Darin Hatton wrote: Running on the road under a load instead of on the center stand may free things up On Wed, Apr 24, 2019, 12:10 PM bobshel...@gmail.com wrote: Good advice  Thanks! Sent from Yahoo Mail on Android

Re: [Nighthawk Lovers] 1983 Nighthawk 650 help

2019-04-24 Thread aajawo
Yeah I've tended to think the same about Sea Foam. But the shop owner recommended it, and he is a seasoned professional mechanic. Says he's seen it work in practice. As a hack home mechanic, I'm not really in a position to doubt him. BTW, the carbs have already been cleaned and rebuilt. This

Re: [Nighthawk Lovers] 1983 Nighthawk 650 help

2019-04-24 Thread Amanda Wurzer
Omg. Seafoam? Really? Lol... Sorry but that's not a fix that a shop should be recommending... You're better off taking the carbs apart and meticulously going th rough every single orface to clean it. Seafoam is nothing more than glorified butane. On Wed, Apr 24, 2019, 11:12 AM Darin Hatton

Re: [Nighthawk Lovers] 1983 Nighthawk 650 help

2019-04-24 Thread Darin Hatton
Running on the road under a load instead of on the center stand may free things up On Wed, Apr 24, 2019, 12:10 PM bobshel...@gmail.com wrote: > Good advice  Thanks! > > Sent from Yahoo Mail on Android >

Re: [Nighthawk Lovers] 1983 Nighthawk 650 help

2019-04-24 Thread bobshel...@gmail.com
Good advice  Thanks! Sent from Yahoo Mail on Android On Wed, Apr 24, 2019 at 10:55 AM, aajawo wrote: Thanks, I also got advice from local shop.  But they recommend Sea Foam in crankcase.  I've only run it on the center stand for about 30 minutes and it does seem to be helping.  Next,

Re: [Nighthawk Lovers] 1983 Nighthawk 650 help

2019-04-24 Thread aajawo
Thanks, I also got advice from local shop. But they recommend Sea Foam in crankcase. I've only run it on the center stand for about 30 minutes and it does seem to be helping. Next, shop said to change oil, run it on the road for 40 minutes, let cool, add Sea Foam, run on road for 40 minutes,

Re: [Nighthawk Lovers] 1983 Nighthawk 650 help

2019-04-24 Thread bobshel...@gmail.com
Wow that was a big change in compression! Good to know.  Sent from Yahoo Mail on Android On Wed, Apr 24, 2019 at 10:44 AM, Darin Hatton wrote: When I got my 700s fired up for the first time #1 cylinder wasn't firing. Compression check showed 80lbs in that cylinder. My problem was stuck

Re: [Nighthawk Lovers] 1983 Nighthawk 650 help

2019-04-24 Thread Darin Hatton
When I got my 700s fired up for the first time #1 cylinder wasn't firing. Compression check showed 80lbs in that cylinder. My problem was stuck piston rings from sitting for years. I mixed acetone and atf 50/50 and poured into cylinder, let soak for a week. This brought compression up to 120 ,

Re: [Nighthawk Lovers] 1983 Nighthawk 650 help

2019-04-23 Thread Graham Rogers
100 psi is not bad, bike should run. Something else is going on Sent from my iPad > On Apr 24, 2019, at 6:03 AM, aajawo wrote: > > So a few weeks ago I purchased a 1983 NH 650 to restore. It has 17k miles > and hadn't been started for years. I installed new battery and rebuilt the > carbs.

[Nighthawk Lovers] 1983 Nighthawk 650 help

2019-04-23 Thread aajawo
So a few weeks ago I purchased a 1983 NH 650 to restore. It has 17k miles and hadn't been started for years. I installed new battery and rebuilt the carbs. The compression with cold engine was 130 PSI for all cylinders with throttle closed (forgot to hold it open). At first it started up and