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Message |
    
lw1911
Junior Member
Username: Lw1911
Post Number: 17
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 01, 2017 - 04:45 pm: | 
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just put a new 18hp Vanguard in my MaxII. Only 4 hrs on engine (got it from my father in law) Engine cuts out/ surges at WOT cruising at the governed max rpm. Plugs look good, replace one mouse chewed coil, fixed slight miss I had, but not cut out/miss. Runs great at lower rpm and on takeoff. I am suspecting fuel problem. I have one inline fuel filter and a briggs shut off valve in fuel line. Is there a chance I'm starving for fuel? |
L.A. Philip Osborn
Advanced Member
Username: Roadwolf
Post Number: 244
Registered: 02-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 01, 2017 - 05:10 pm: |
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I know is hard to believe but your carb may be dirty. I suggest cleaning the jets.
Robert Longfellow LA |
lw1911
Junior Member
Username: Lw1911
Post Number: 18
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 01, 2017 - 05:41 pm: |
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Thanks Philip, already checked carb, it is immaculate inside, I only run non-alcohol premium in it with seafoam added just because it has worked so well on my weedeaters amd chainsaws |
Nubs
New member
Username: Nubs
Post Number: 6
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 01, 2017 - 05:51 pm: |
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I'd start with the plugs, does the miss get any better if ya choke it a bit? |
Model Citizen
Junior Member
Username: Model_citizen
Post Number: 19
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 01, 2017 - 05:54 pm: |
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Ditto on the jets. At least check them. There maybe something blocking the fuel at WOT that you don't notice if you're just putzing around.It's the only issue I've ever had with my V-Twin when it sits idle too long & it's only happened twice. |
lw1911
Junior Member
Username: Lw1911
Post Number: 19
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 01, 2017 - 06:08 pm: |
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I'll throw plugs in it and check jets again, but like I said this thing only has about 6 hours on it now. In original configuration it had fuel tank mounted on engine from Briggs and was pull start only. It was on a log splitter. It ran great on splitter, father in law just got tired of pull staring it and bought a 20hp electric start. I bought the parts to make it electric start and put the 16 amp 10-16 amp (if I remember right) stator in it so it would charge. |
WFO
Member
Username: Wfo
Post Number: 24
Registered: 07-2016
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 01, 2017 - 10:55 pm: |
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MAKE SURE YOU USE HIGH PRESSURE AIR ! |
lw1911
Member
Username: Lw1911
Post Number: 23
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 02, 2017 - 08:41 am: |
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Did all the above plus checked valve lash, no joy |
WFO
Member
Username: Wfo
Post Number: 25
Registered: 07-2016
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 02, 2017 - 10:15 am: |
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maybe old fuel line and its closing up on you, low fuel volume |
Bryan Jaedike
Intermediate Member
Username: Tigerguy
Post Number: 59
Registered: 02-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 02, 2017 - 10:47 am: |
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I seem to remember learning that happens when the engine is turning to many RPMs Check the governor spring for damage, or has someone bent the governor arms? |
lw1911
Member
Username: Lw1911
Post Number: 24
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 02, 2017 - 11:22 am: |
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New fuel lines, RPM from infrared reading about 3488 to 3550. |
WFO
Member
Username: Wfo
Post Number: 26
Registered: 07-2016
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 02, 2017 - 12:41 pm: |
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the only other thing it could be is an ignition issue or a valve float |
Tim Startt
Member
Username: Wedge
Post Number: 21
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 02, 2017 - 07:25 pm: |
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What did you set the air gap at on the coils ?
Also As far as the carb go's the Emallsa tube ( the center one with the little holes in it )
Is what you want to have clean as it Vapors the fuel on top end.
You need to Pull it to inspect.
You can do Full open run on it and Shut it down on the full pull (no Ideling) And Pull the plugs. This will give you a True plug reading.You may just need to step up on jet size as the engine never ran there before on a Log slpitter ?? |
lw1911
Member
Username: Lw1911
Post Number: 28
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 02, 2017 - 11:31 pm: |
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Air gapped coils @.010 spec showed .008 to .012,
I'll try what you posted thanks Wedge |
Bryan Jaedike
Intermediate Member
Username: Tigerguy
Post Number: 61
Registered: 02-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 08, 2017 - 04:50 pm: |
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Any news on your problem? |
Tim Startt
Intermediate Member
Username: Wedge
Post Number: 65
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 08, 2017 - 07:12 pm: |
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Last I talked with him on the phone he said it was running good at that point. |
lw1911
Intermediate Member
Username: Lw1911
Post Number: 56
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 09, 2017 - 08:27 am: |
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All better now |
Tim Startt
Intermediate Member
Username: Wedge
Post Number: 66
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 09, 2017 - 04:32 pm: |
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Great to hear My friend.
You can hit me up anytime !! |
Bryan Jaedike
Intermediate Member
Username: Tigerguy
Post Number: 63
Registered: 02-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 09, 2017 - 05:51 pm: |
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What was wrong with it? |
Nubs
Member
Username: Nubs
Post Number: 23
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 09, 2017 - 05:58 pm: |
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Did it get better on its own or was it something you found? |
Nubs
Member
Username: Nubs
Post Number: 24
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, August 09, 2017 - 06:00 pm: |
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ahh funny, thinkin' the same thing @ the same time..
Crazy |
lw1911
Intermediate Member
Username: Lw1911
Post Number: 59
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, August 10, 2017 - 08:09 am: |
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Must have been something in a jet or emulsion tube, after final carb clean it straightened out |
L.A. Philip Osborn
Advanced Member
Username: Roadwolf
Post Number: 246
Registered: 02-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, August 14, 2017 - 06:39 pm: |
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Happy you got it sorted out and fixed
Robert Osborn LA |
Tim Startt
Intermediate Member
Username: Wedge
Post Number: 94
Registered: 07-2017
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, August 14, 2017 - 07:06 pm: |
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Those Emulsion tub's will screw you up every time.
Doesn't take much to through the whole carb off !
I went to a Blunt needle and tube in my Harley as it run better and is easy to tune. |
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