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TOPIC: Re:Poor fuel mileage
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Re:Poor fuel mileage 3 Years, 9 Months ago
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yamaha_guy wrote:
ok it was the bowl heater ha ha but i was told to figure out which jet im running for yall to help me and i have a 162.5 main jet.
That's very strange. 
The stock 1600 has a 165.
You should check your choke as outlined here .... http://roadstarclinic.com/content/view/219/96/
Doc
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Re:Poor fuel mileage 3 Years, 9 Months ago
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That is weird especially 'cause black smoke sound like it's running rich.
Does it hesitate at all during a WOT test? If it stutters and then picks up after AND is blowing black smoke and getting poor MPG, that all sounds like you're rich. Something you probably don't want to hear is that black smoke could mean bad rings too 
I'd go with jetting though personally. |
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The day I stop learning is the day I start dying.
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Re:Poor fuel mileage 3 Years, 9 Months ago
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black smoke is rich, blue is oil (white for water but we got no h2o).
move the main jet's needle clip up 2 notches.
remove tank, open top cover, like a dentist pullung a tooth
that plastic clip will come out, watch for tiny washer on needle too.
the washer adjusts the off position of the needle and the e-clip the mid-high range.
if you put around town under 45 or cruize 55-75 which is worse for smoking? |
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Erbman02 (User)
Platinum Boarder
Posts: 5258
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Re:Poor fuel mileage 3 Years, 9 Months ago
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yamaha_guy wrote:
ok it was the bowl heater ha ha but i was told to figure out which jet im running for yall to help me and i have a 162.5 main jet.
That main is too small. You'll need to check the pilot jet size too, stock is a 35. Most of your cruising speed comes off the pilot ckt.
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Re:Poor fuel mileage 3 Years, 9 Months ago
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So since im running a smaller jet then i guess im suppose to have, are there any adjustments they could have made when they put this jet in to cause the running rich??
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Re:Poor fuel mileage 3 Years, 9 Months ago
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dave
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Re:Poor fuel mileage 3 Years, 9 Months ago
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i looked for a size on it but didnt see one do i need to take it out to know what size it is?
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Re:Poor fuel mileage 3 Years, 9 Months ago
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Yes, That would be the easiest way. It is stamped into the side very small. Be careful not to hit the float. You might want to also check the float level before reassembly.  |
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dave
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Re:Poor fuel mileage 3 Years, 9 Months ago
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thanks dave i will check that out, and i looked at my choke cable like DOC said that there is definatly not enough room for a business card to fit in there so i will mess with that tomorrow i guess. thanks guys ill let ya know what i find
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Re:Poor fuel mileage 3 Years, 5 Months ago
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ok guys so i checked my choke cable and trimmed some off the knob so there is a little gap. and i went on about a 100 mile trip never getting over 65 and still only got about 30 or 31mpg. any other ideas???
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