GL1200 Carb issues

[Spartakis]

I know there are posts about carb issues and solutions, but I would like to tell my story as I am stuck and not sure what to do.

My carbs needed cleaning as my Goldwing is a 1984 and the tank was rusty. I emptied the tank, put five gallons of Metal Rescue in it, let it sit for a couple of days, emptied it all, rinsed the tank with water, dried it with a hair dryer, and put everything back together. The first day running was fantastic. You can tell what the machine is properly running. Unfortunately, after a day of riding, symptoms presented: the typical sputter and hesitation off the line and with acceleration at various times. I talked to a local mechanic who has been very helpful throughout this process and he recommended that I do everything over again and let the Metal Rescue sit for three days. I decided to do four days. After emptying through this second round, the Metal Rescue was jet black. Rinsed the tank at least ten times with water and siphoned everything out. Some flash rust appeared after it was dry, but it was not major. The tank inside looks so much better than it did. Unfortunately, every time I siphoned water out, I would see little bits of black junk in the bucket that the water went into. I decided to put everything back together, got a new replaceable filter (Spectre brand, the Napa Golds in my opinion are useless as I have bought at least five and replaced them all), put new gas in, and started it up. Sadly, it didn't take long for the symptoms to appear AGAIN. I am quite discouraged with this whole process as I am certain many of you know how much of a pain taking the carbs off a GL1200 are (although I will admit, I am getting much faster at it). I am looking for any sage advice fellow GL1200 riders and wrenchers are willing to offer. I am thinking I will remove the carbs again, clean the jets, tiny filters, and everything else and put it back together. My question is, are there any filters that do a better job of filtering? As I said before, the NAPA Golds are crap in my opinion. What else can I do to prevent this from happening (besides taking off the tank and taking to a shop to be treated, I would rather not disassemble the entire back of my bike)? Thank you for reading.

[Spartakis]

Also, could the carbs needing to be synced contribute to this problem?

[ekvh]

Never saw the inside of a 1200 fuel pump, but the earlier ones could be a hiding spot for debris to “infect” your carbs again.

Another easy to neglect spot on the tank is the very top. If your metal rescue isn’t covering it, you could still have debris there.

[Spartakis]

How would I go about cleaning the pump? Or checking to see if there is debris in it?

[Dadster]

I'm in the middle of rebuilding a gl1200. My second rebuild of a goldwing that sat for 9 or more years. When I get a rusted tank I fill it with vinegar and let it sit for at least 3 days then shop vac all out. That gets almost all the rust out. Next I blow dry the tank using the exhaust side of the shop vac. I let it blow through the fill opening and out the sending unit access till it's dry. Then vac out the dust that's left in the bottom. Buy a couple fuel filters cause you'll have to swap them out as needed until they stop loading up. I usually go through 2 filters. Replace your fuel lines too, they'll be gunked up. If the fuel pump is suspect replace it. You can get a new one cheap on ebay.

That's how I deal with rusty tank issues. Hope this helps. I'm sure you'll hear from other members that can give suggestions that work for them.

[gervais]

Did you check the valve on the gaz tank??

gervais