Re: 1982 Honda express won’t start

Yes but it is pretty quick to take it apart

Re: 1982 Honda express won’t start

> Owen Sims Wrote:

> -------------------------------------------------------

> Yes but it is pretty quick to take it apart

Most likely the crank seal is bad and thats where all the oil came from. Stick your nose in there and smell it.

Re: 1982 Honda express won’t start

Okay

Re: 1982 Honda express won’t start

At some point you'll be needing this too.

NU50 service manual(edited)

Re: 1982 Honda express won’t start

TAKE MORE PICS OF THIS AREA!

Preferably from above.

Screenshot_2019-07-04-23-18-04.png

Re: 1982 Honda express won’t start

I will. Also can a crank seal cause low compression

Re: 1982 Honda express won’t start

Hell yes.

Re: 1982 Honda express won’t start

Okay

Re: 1982 Honda express won’t start

Where is the best place to buy one and should I get anything else for it that could be causing this problem?

Re: 1982 Honda express won’t start

I never worked on one of those but I was able to get seals from a local bearing shop for my NC50. You're in Kokomo so that shouldn't be a problem. Would be best to take the removed seal in person to a bearing shop. Oil resistant double lip seal. There are three sets of digits on all seals that represent I.d./o.d./thickness but I dont remember the order.

Hell it may take the same seal as a regular express

Treats may have them and youre gonna need a flywheel puller too. Do you have a band clamp to hold flywheel?(edited)

Re: 1982 Honda express won’t start

No

Re: 1982 Honda express won’t start

Shawn Manthey /

Treatland has the seals, I just got some about a week ago. They have a sale currently too. Left and right seals are different just so you know

Re: 1982 Honda express won’t start

I only found the left crank seal

Re: 1982 Honda express won’t start

A crank seal leak will not show a low reading on a compression gauge when tested at the spark plug. A few other things will though and all of those point to the wrong tester or testing procedure with exception to actual low compression.

Re: 1982 Honda express won’t start

All three of these are right side with measurements. Get the O.E.M. $6 one

Call a Honda shop and see if they are still available. 1982 NU50.

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Re: 1982 Honda express won’t start

Shawn Manthey /

Left side seal measurements are 20x31x7. Right side seal measurements are 15x25.5x7

Re: 1982 Honda express won’t start

Jack Rutherford /

Dude, you've got too much going on here.

1. Slide in correctly?

2. Did you try to adjust the carb air/fuel screw and throttle stop screw? Could be your throttle stop screw is turned too far in.

3. Auto choke functioning properly?

4. All your auto choke hoses in good shape and correctly installed? No open ports?

5. Test for air leaks with carb cleaner at all joints? Head to cylinder, cylinder to case, intake to carb, carb chamber cap, intake to case?

6. coils no longer oil soaked?

Did we ever determine what the oil was like that was in your stator/flywheel? If that was straight, unadulterated oil then I doubt it came from a bad seal. More likely leaked out of the oil reservoir and somehow got inside your flywheel/stator. Are you missing the rubber plug that goes in the timing port?(edited)

Re: 1982 Honda express won’t start

> Jack Rutherford Wrote:

> -------------------------------------------------------

> Dude, you've got too much going on here.

>

> 1. Slide in correctly?

>

> 2. Did you try to adjust the carb air/fuel screw and throttle stop

> screw? Could be your throttle stop screw is turned too far in.

>

> 3. Auto choke functioning properly?

>

> 4. All your auto choke hoses in good shape and correctly installed? No

> open ports?

>

> 5. Test for air leaks with carb cleaner at all joints? Head to

> cylinder, cylinder to case, intake to carb, carb chamber cap, intake to

> case?

>

> 6. coils no longer oil soaked?

>

> Did we ever determine what the oil was like that was in your

> stator/flywheel? If that was straight, unadulterated oil then I doubt

> it came from a bad seal. More likely leaked out of the oil reservoir

> and somehow got inside your flywheel/stator. Are you missing the rubber

> plug that goes in the timing port?

Agreed. Check the simple stuff first. But if that stator compartment smells of gas then thats a problem.

Also, MORE PICS OF THE AREA WITH THE CRACK IN THE ENGINE CASE !!!! IT COULD BE JUNK!!

Re: 1982 Honda express won’t start

I got pictures of the crack

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6885E2AC-28D8-4AB5-8198-01269FFAD746.jpeg
FA6F8CEB-8830-4998-9165-242B1EE3BA55.jpeg

Re: 1982 Honda express won’t start

Thats a casting mark.

The case is fine.

Whats that magneto smell like??(edited)

Re: 1982 Honda express won’t start

Captain Janeway /

From these angles I don't see a crack either

Re: 1982 Honda express won’t start

> Captain Janeway Wrote:

> -------------------------------------------------------

> From these angles I don't see a crack either

What looked like a crack was a high spot, flashing, casting mark....

Screenshot_2019-07-07-01-11-33.png
Screenshot_2019-07-07-01-14-07.png

(edited)

Re: 1982 Honda express won’t start

Shawn Manthey /

You could always shoot some brake keen or starting fluid on that area and see if it makes a difference in running.

Re: 1982 Honda express won’t start

I feel like the auto choke doesn’t work because when ever you turn a choke on it revs it up but eventually will kill the engine

Re: 1982 Honda express won’t start

How do you know if the auto choke works?

Re: 1982 Honda express won’t start

Jack Rutherford /

> Owen Sims Wrote:

> -------------------------------------------------------

> I feel like the auto choke doesn’t work because when ever you turn a

> choke on it revs it up but eventually will kill the engine

It's an automatic choke so it turns on automatically, so to speak, when the engine is cold. Generally, it's working if your bike starts up when the engine is cold.

Re: 1982 Honda express won’t start

Well I probably shouldn’t have taken it apart

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Re: 1982 Honda express won’t start

I have been reading old Honda urban express posts and am going to get a new fuel petcock for this, I found some but I don’t know if they would be reliable or just junk. Also where would I get a gasket for the automatic choke?

Re: 1982 Honda express won’t start

Captain Janeway /

> Owen Sims Wrote:

> -------------------------------------------------------

> I have been reading old Honda urban express posts and am going to get a

> new fuel petcock for this, I found some but I don’t know if they would

> be reliable or just junk. Also where would I get a gasket for the

> automatic choke?

Decent ones seem to be a pain to find in my experience. Make sure you get right size (16x1.5) and at minimum make sure it's held together with screws not rivets (they see to be better quality but a lot are crap regardless). I've had crappy luck with Savoir. The two I've bought have leaked.

Is your petcock leaking? If not I'd leave the stock on. They're better quality.

Just carefully screw the autochoke back together. Like jack said, if the bikes starting it's probably not the problem. I've not had an issue with them after 5 bikes

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