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Joe Reeves can u please help me

"89 110 runs a little rough at

"89 110 runs a little rough at idle im told its possably a lean pop. Carbs were taken out appeared clean put back in ran worse. Carbs were rebuilt runs great at high speed, idles just ok a little rough hard to start after sitting in the lake. Been working on it or having it worked on more than using it. Was hoping to take my son fishing. Thanks for your help. Still would like for u to email I believe we live in the same area. Im not a good typist either."
 
"The engine if all is well sho

"The engine if all is well should start within six revolutions.

If you have proper compression and spark, approximately 100 psi and even on all cylinders, with spark that will jump a 7/16" on all cylinders (with the spark plugs removed), the problem is usually carburetion.... fouled, gummed, clogged.

What is the compression by cylinder number?

Does the engine have the spark as listed above?

S/Plugs should be Champion QL77JC4 plugs, gapped at .040 .

The idle "Air Bleed" jets (4 total) that screw into the inside top of the carburetor should be marked 36 (.036 Inside Diameter size).

The high speed jets (4 total) located in the bottom center of the float chamber should be marker 67C (.067 Inside Diameter size)

Unless somthing is amiss with the compression or spark, I'd suspect that either something was overlooked within the carburetor or the linkages are incorrectly set."
 
"Thanks for your help. Compres

"Thanks for your help. Compression is good UL 105,LL 105,UR 105, LR 110. Background UL,LL,UR plugs were wet LR was lean. Was using ngk back to champ ql77jc4. Had alarm go off on ears with ngk. R HGasket,thermostats,recirc valves were replaced. Carbs were clean, cleaned anyway with gumout, had to replace one plastic bowl and jets 67c's ran lousy, took carbs out again and rebuilt (omc kits) runs high speed good,idle fair to lousy, starts like a Mercury when its been sitting for a while half an hour to an hour. Took to shop for sync link & timing they said just a little off. Prop nut did not look like it was removed for wheel test. They left the key switch on as well.They wanted to pull carbs and soak. These carbs have always been clean as a whistle in the 3 yrs I ahve owned it. I rebuilt them 3yrs ago just to do it since it had sat for a while."
 
"I have no idea what (UL,L

"I have no idea what (UL,LL,UR plugs were wet LR was lean) means. Standing in back of a engine, the cylinders on a V4 are number as:

2....1

4....3

You say that 3 of the s/plugs were wet. Were they really soaked? What color were they... normal brown, solid black, something else? Did any of that wetness look to be traces of water?

The plug you say was lean.... what do you mean by that? Was it completely dry... what color was it? We need to know exactly.

If you have compression and spark, The problem is fuel related usually.

The spark (with the s/plugs removed) must jump a 7/16" gap with a strong blue lightning like flame, a real SNAP! Does it? (Important). You can rig up a tester as follows.

Spark Tester - Home Made
(J. Reeves)

A spark tester can be made with a piece of 1x4 or 1x6, drive a couple nails through it, then bend the pointed ends at a right angle. You can then adjust the gap by simply twisting the nail(s). Solder a spark plug wire to one which you can connect to the spark plug boots, and a ground wire of some kind to the other to connect to the powerhead somewhere.

Using the above, one could easily build a spark tester whereas they could connect 2, 4, 6, or 8 cylinders all at one time. The ground nail being straight up, the others being bent, aimed at the ground nail. A typical 4 cylinder tester follows:


..........X1..........X2

.................X..(grd)

..........X3..........X4"
 
"Thanks Joe x4 was drier the o

"Thanks Joe x4 was drier the others were oil wet. Upon looking up coils in the book if the washers and screws are not mounted the way they they should be, what are the symptoms?"
 
"Im talking about the way the

"Im talking about the way the coils are mounted the book says the screws and coils have tobe mounted a certain way. I took the coils out cleaned all cleaned the connections on the coils applied a little corroision x motor ran well with ears for 10 to 15 minutes then a little rough. Removed plugs #3 was fuel oil wet black white insulator was black, probably fouled, the others were fuel oil wet and matched. Cleaned plugs up still ran rough put another set of clean used plugs same thing. Thanks for your help."
 
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