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1983 johnson V4 140hp

H

huron

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"I have 2 type 2 carbs. I need

"I have 2 type 2 carbs. I need to enrichen the low speed jets. I don't know if the low speed jets are air jets(to go smaller) or fuel jets (to go larger). My shop manual doesn't say. Also, does anyone know what size jets they are so that I could get new one's ordered without removing and taking them apart?"
 
"what reasons leed you to beli

"what reasons leed you to belive you need to change jet size.(rough idle,hard starting?)
can you post a photo of all plugs (in order)
so we can see and possibly give you some
solid advice on the problem."
 
"cg'ing jets,is a last res

"cg'ing jets,is a last resort,and is usually,correcting another problem,......which,is totally acceptable,providing,...all normal repairs,incl link and sync,have been done...if the jets,are in the top part of air horn of carb,it is an air restrictor--jet......in the bottom,above hs jets,is fuel.."
 
"recently recieved a private e

"recently recieved a private e mail from ernie h
it is a recent rebuild with boyseen reeds.
dont know much more,apperantly had an issue posting."
 
"The only reason one would nee

"The only reason one would need to change jets is if you change altitude.

If your all of a sudden having a issue as in idle, it is probably time to remove/clean or rebuild the carbs..

I just fixed my engine, would not idle. Removed carbs and found 1 side of my top carbs idle fuel jet clogged...My engine has 3 dual barrel carbs and even just one idle jet clogging caused the idle issue.."
 
"actually,jets are frequently

"actually,jets are frequently changed,during an overhaul,or due to idle problems that are unable to be corrected by other means,and as u mentioned,..diff altitude.or going to high perf reed valves."
 
"boyeson reeds are good,HOWEVE

"boyeson reeds are good,HOWEVER,..one good engine sneeze,and it cracks,or blows out a reed,...therefore needing to redo whole procedure."
 
"engine also .20 over size and

"engine also .20 over size and timing was changed
factory says 28 currently at 24 for what reasons.
i just dumped the e mail that was sent ,thought the conversation was over.maybe he will jump back in and tell us a little more.also i was hoping he might get a chance to hear from JW
as he is also from texas."
 
"due to our supposedly,lower f

"due to our supposedly,lower fuel qualities,..retarding the timing a few degree's is appropriate,and called for,to help prevent,detonation and preignition."
 
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