[dehood]

UPDATE #5

Hey guys, it's been a while.. So i finally got a chance to come back to my garage. I have tried installing the fuel filter and it just doesnt fit lol 😅 so I ended up using the factory filter which goes inside.
Anyways, i started the bike it was running for a while.. But once i tried again it was not starting anymore. I could hear it is kinda making explosions but nothing happens. I took out the plugs and they were covered with fuel. I think i f..d up and probably there's fuel in my engine.. Anyways, my goal was to make it running so i could ride to mechanic and see if he could diagnose what's wrong with the engine, but I will ask him to come with a trailer to collect it..

That's that. If anyone could suggest how to clean the fuel of engine without opening it, i would greatly appreciate 🥲

 

[Zed7]

Are you saying the carbs overflowed gas into the engine? Easy to find out.
First off, the oil level in the sight glass will be over the limit even on the side stand. If you remove the oil fill plug, take a whiff and there's no mistaking the gas smell coming out.
Simply change the oil, put oil in the cylinders as they've been scrubbed clean from the gas. Crank it over a bunch with a rag over the spark plug holes because it's going to spew out.
Then change the oil again.
Make sure you tell your mechanic to check valve clearance.

I think to fit a fuel filter you must first rotate the tee between carbs 2 and 3 downwards so that the fuel hose comes around the bottom of the carbs thus making more room for a filter.

 

[Obo]

Yes as Zed7 said if you have fuel in the oil simply drain it all out and replace. You may need to repeat the oil change another time, so if you are doing it twice just use any inexpensive oil the first time as you are just going to drain it right out anyway.

It does mean there's an issue in the carb with a bowl float and or your petcock that let the fuel run so it filled the engine. If you left the petcock on PRIme, that's the start of the problem as it let's fuel flow even when the bike is not running.

Be very careful with the cranking the engine over with a rag over the plug holes. If you have a spark from the plug wires you'll likely have yourself a fire.

 

[Zed7]

Good one Obo, I forgot about the explosion. ⚡💥

 

[dehood]

Guys, thank you so much for these tips!!! I appreciate your help! And specially with the fuel filter haha. I will add the filter later on, but now i already find a very good mechanic who is willing to take a look at the bike and do a check up to see if the bike is worth putting money into. If i get a greenlight from him, i will ask him to rebuild the engine (if needed) and then i will start the electrical stuff.

Anyway, i will keep you guys updated for the further progress.

 

[Zed7]

You don't need to rebuild the engine because of gas in the oil if it was not ridden under extreme conditions for a long time. It is more common than you think.
How many miles on your 7?

 

[dehood]

You don't need to rebuild the engine because of gas in the oil if it was not ridden under extreme conditions for a long time. It is more common than you think.
How many miles on your 7?

I will rebuild the engine if needed. I need an expert to take a look. The bike has 68k miles. I am 3rd owner, looks like other owners never took a good care of the bike. I am very angry and sad.

 

[Zed7]

I see. Have a good mechanic take a look at it. Check the valves and do a compression test. These engines are pretty tough.
If you do need a new engine it usually cheaper to buy a good used one than to have one rebuilt by a pro. But I'm betting a low mile engine are tough to come by.
Then there's always the option of buying a new bike either for parts or to ride keeping your bike for parts. Make one good bike out of two.

 

[Zed7]

I don't even want you tell you how long it took me to scrape the old gasket from my engine. It was brutal.

 

[dehood]

UPDATE #6

Hi everyone, it's been a while! So since the last time i got dissapointed i didn't wanted to do anything with the bike for a while. Then a good 2 months later i came back to garage, took out the spark plugs and the bad fuel was still in the bike. Started the bike and the fuel was spurting out of the spark plug holes. Did that for a while while, and left the bike with open holes just slightly covered with the paper towel so no dust or particles can't fall in to the engine. I said to my friend that if i won't make her run during christmas, i will sell her.. Left the bike for another half a year like that..

Then, right after the christmas i came back to the garage, drained ALL the petrol and oil. Then the next day changed the old oil filter, topped up bike with fresh oil and petrol, checked the engine compression and readings were: 150 150 130 120. This was a good sign of so far good pistons. Anyway, then tried to start the bike with the fully opened throttle and the choke. It fired but felt like the 2 cylinder was not working. Took out the sparks, took out the spark boots from leads and 2 leads were poorly screwed in to the boots - courtesy of my old mechanic... screwed boots tightly, rechecked the connectors to the ignition coils. Assembled, started and boom!! All 4 cylinders were working like a charm, no strong petrol smell from the exhaust. She has signs of life!

But ofc here are the biggest issue she has now - she holds 1k rpm with the choke on, and dies without the choke. Also, she's a flamethrower and hesitates the high rpm. I suspect the vacuum leak somewhere and the fuel gauge sitting on empty even though she's almost full would explain it.

 

[Zed7]

Have you check valve clearance?

 

[dehood]

Have you check valve clearance?

No. I don't have a garage where i can do those things unfortunately. But thanks for the reminder, i will ask my mechanic when i bring her for checkup.

 

[Zed7]

A garage is key.
Anyways, proper valve clearance will sort out many ill running problems.