MC 54 250B with 244c engine 2008 build concerns By bobf (Read 1,410 times)

[Alleyoop]

When started cold the ENRICHER is feeding EXTRA FUEL so it is like holding the throttle a little open. After it slows down it should idle around 1800-2000 rpms. That is why it is important to try and adjust the carb while the motor is idling and after it is warm and the ENRICHER has shut off the extra fuel.

Adjusting the Mixture all you want to do is adjust it IN EITHER DIRECTION to get the HIGHEST IDLE from your adjustment, if after that adjustment is found and done you mayt need to lower the IDLE using the IDLE SPEED SCREW which controls the throttle opening. You want to set the idle to where the motor idles the smoothest and the REAR WHEEL NOT SPINNING.
Alleyoop

[bobf]

I have given up trying to adjust the mixture on my engine. With the air tube and hoses I can not even feel the mixture screw with my fingers, let alone and hold a wrench to do the job. It may be easier on a 3 wheel machine. So I am back to assembled and running again. Still not ridden yet, but soon.

I find the engine on a cold start to go to about 2,500 quickly then go on up into 3,000 and even to 3,500 or higher. This lasts for about a minute then starts to slowly drop down and after a minute and a half it is again idling at about 1,500 and running steady. I don't remember it running so fast at start before all the fiddling and parts changing I had to do. But I could be wrong.

So once I get a chance to take a ride and see how the scoot behaves, if satisfied, I will try to sell for a decent price. If not running well I will list and tell any curious about the problems and will accept a decent bid for it. My goal now is to clear the garage and become an old man helping the wife to keep going. We have over fifty years together and would not mind a few more if possible.

[Alleyoop]

Nice going Bob, yea I hear you, it gets to the point of just fix it the best you can and see what you can get for it and get it out of your hair. Congrats on the long partnership we are 2 years behind you.

I am thinking of selling my Trike as well, I have lost interest and I do not ride it as much anymore. It runs like a raped ape but it just sits in the garage taking up space. I start it and let it warm up once a week and shut it down. I am a warm sunny rider and the weather around here has not been riding weather for me anyways it has been crap to say the least in the 40s-50 during the day lots of rain and overcast no sun and it is MAY 1st.
Alleyoop

[bobf]

Curious, your id area says 'Location EXUMA'. I posted that on my mapping program and it came up with a place in Denver. Is that a true location for you?

We once lived in Longmont and my daughter has a house near Golden that she intends to sell soon. I always liked Colorado and when retired I moved down to Cortez. When the doctors told me to consider ordering tanks for my breathing, I just up and moved to Arizona south of Phoenix. Four years of taking care of my Cortez property and in March this year it was finally sold.

I took a ride this morning and found the engine was changing speed. It would not drop down when I let go of the throttle so I went home and it was idling at near 2,200. A coupe quarter turns on the idle setting screw and it dropped on down to a bit over 1,000. Will try it again tomorrow. Will let every one know how it works.

[Alleyoop]

exuma is an island off the bahamas and is not my true location its my youngest son and wife favorite island to vacation. Well 1000 rpms is to low for the 250s they like to idle around 1800-2000 rpms.

[bobf]

Well Alleyoop, I am still not sure about my idle. I can only go by my dash gauges and their accuracy. I still run it regularly to see how it is doing. My idle has been settling in to about 1200 on my instruments. Today I ran it again and decided to try to speed it up. Barely a touch on the screw and it started running much faster. So I did another lite touch on the screw to slow it down and now it idles at something less than 1500 but higher than the 1200 it has been running. So for now I give up again. Barely touch the throttle and the wheel starts to spin. I will try it again tomorrow and see how it reacts. Might be my last effort.

One thing I did that may be helping. Earlier I was complaining that during the warmup the idle would go well over the 3000 and nearly 3400 level of RPM's. Lately it has gone from start to near 2000 or 2400 but never to the 3000 or higher.

A while back I needed gas so I went and filled my 2.5 gal can with some of our high grade gas. Back in the garage I started by putting a bit over 2 oz of SeaBreeze gas additive into the tank then poured in enough high test to fill the tank.

Then after a few starts and warmups over several day I noticed the idle was much slower than before. Could that be because the SeaBreeze might have done something to the carb or engine to make it work better? Whatever, I am much better pleased with things right now.

[bobf]

I have ended my constant digging around and searching for problems. I am now getting too old to mess with a two wheeler anymore. It is back to running reasonally well after about 6 months of covers on the floor and me laying on the floor replacing and trying to get things working. I am ready to sell it now. First one to offer me $3,000 cash will be the new owner. Just kidding for sure. When I do offer I will be reasonable. Only 250 miles on it for about 5 years of ownership.

One thing I found while trying to fix leaks was the right hand side plate. It had a major flaw in it that must have been filled with epoxy type stuff. A place for leaking for sure. I tried a patch that did not work so I ended up making the side plate change. Every thing seems tight now and it stays dry.

I have been trying for months to be able to handle scans and such with Win 10. I was going to print scans of this problem for others to see. Been working a lot to understand what to do, but still can not move my scan to this forum. I use Insert Image and when doing that it fails to follow my search and give me any connection.

I have been thinking of dropping Win 10 and moving back to Linux products. I once had some very good Linux products and hope they still make good products under Linux name. Windows in recent years has been a bunch of crap.

Would still like to be able to post my scan if someone knows and a beginner way to do it. My scan is now in my files under pictures. How to make it link to this forum in my post?

C:\Users\BobFey\Pictures\2016-05-19 001

[bobf]

I am going to click on 'Insert Image' now. Nothing happens now and I am signed in. Prior I could get the box about 'Browse' but it did not work even when I did find the image and want it open. I have been trying this for some many hours with no luck. I am now using the easy picture posting from the forums first screens. Something is wrong. I have used images and scans. Not at all sure it is the problem of the image program or if it is really some more of the MS messes created by Win10.

Just trying to post my picture of the damaged right crankcase cover that I eventually found and replaced.

Any help?

[bobf]

OK, I just tried again and finally it seems to be working. Thank you to whomever managed to get things working again.

You may need to enlarge it to see the actual damage I found. The image is really two parts which was one of the entire plate but did not show clearly the damage due to the distance and angles. So I then put the local damaged area as close to the glass as I could get it and took that shot. This was all done on my copier as I no longer have a decent camera to use.

I was amazed to find such a damaged part hidden on my engine. Last summer it was running fine and one day my daughter wanted to ride it so she drove for about 10 minutes. When she got back the engine was leaking coolant and running hot. That was the beginning of my 6 months of covers on the garage floor and changing and replacing many things. It is now back together and running fairly well with a new right side plate.

The visible damage to the right of the water pump area is because I had to get the metal tube for the coolant hose out. Force did not work so I just started to drill and drill till very little material held the tube in.

I hope I am done with the repairs and replacements now.

[bobf]

OK, yesterday I went to the local paper and order a week of adds for my scoot. I hope some folks call and show some interest.

I paid $2,000 for the machine and after 5 years of ownership I have accumulated about 250 miles of use. Spent lots of hours working on it and a bunch of dollars too. Sorry I did not get more use out of it. I think whomever does buy it will be able to get plenty of good miles now that I have done the investigating and fixing till I really found a bad problem and replaced the right side plate.

For the buyer I intend to give them all the parts I bought for fixing but never got a fix. So many parts I put on I took off and have kept them for future. I really did have a bad fuel pump, and the bad right crank case cover. Much of the other parts, Carb, sensors, temp controlls, what ever they may be called, are likely something the buyers may want to have handy and end those week or so days waiting for the replacement parts to show up.

Enjoyed my times working on the scoot and was learning a lot all the time. Time to sell as I am having problems walking now and balance seems to be wandering at times.

If I get a buyer I will let you know how it went and how much I got.

Enjoyed meeting all you folks.

Bob