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Terrible Gas Mileage

  • Thread starter Thread starter Norseman
  • Start date Start date
The carbs are usually the culprit regarding performance and fuel efficiency. The electronics (other than the RR), engine, and
everything else is bulletproof. 95% of the time. it is issues with
the carbs. That is where everything gets mixed, metered, and
tuned for optimum performance together with the subsystems
of the electronics and the mechanical aspects and synchronization
of the engine.

You probably will have to rebuild the carbs again. The best carb kits
for any GS series bikes I've experienced is with George Fix on Ebay
AND on thise GSR website. His carb kits are complete and not just
a few O-rings. Don't be fooled by junk kits out there made in China.
George only sells the best !! I've gotten very good at rebuilding
these carbs.

Check the carb bodies too for hairline cracks. You'll see it all when
you replace everything with these complete kits. Don't buy half kits
with just a few gaskets and O-rings - buy the complete kits. I've
always wanted to make my own clear float bowls with a level line
drawn so I can see the gas level in each bowl. You can also see dirt
inside or blockage.

Good luck on your project.

Talk to you soon :-D
 
Auto Zone has one that is the cheapest i have seen for $40.00, and it has the correct size adapters for motorcycles which should have a 12mm and even a 10mm, the higher numbered ones are for auto spark plugs. Sears carries one but is $60.00, They usually have it behind the counter so ask the salesperson. Normally you would take three readings from each cylinder and use the average of the three readings as the compression figure for each cylinder, but other members could provide clearer direction.
 
hole in the vacuum pet cock diaphragm. check the plug color on #2 cyl. of it is darker than the rest the petcock is to blame.
 
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