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Engine performance

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Old Jun 4, 2016 | 04:32 PM
  #1  
Luis Gomez's Avatar
Luis Gomez
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From: Puerto Ordaz, Venezuela
Default Engine performance

my softail has 100.000 miles now, when the engine goes to 2000-2300 rpm it tries to miss like were still cold and when I try to go faster than 70 mph I open up the accelerator full open but do not increase the speed. Any suggestion as to the cause, please.
 
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Old Jun 4, 2016 | 05:16 PM
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If it has a CV carburetor check the vacuum piston diaphragm for a tear or hole in it.
 
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Old Jun 5, 2016 | 09:20 AM
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Default leak down test

I would start off by doing a leak down test. this will tell you how the health of the motor is. if the valves are leaking a bit then it will show with this test.
sounds like you might need a little valve work. dsv
 
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Old Jun 5, 2016 | 06:26 PM
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What year and carbed or fuel injected?

I'm thinking it's fuel related, especially if it's carbed....
 

Last edited by 98hotrodfatboy; Jun 5, 2016 at 06:54 PM.
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Old Jun 5, 2016 | 06:49 PM
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Could clutch be slipping?
 
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Old Jun 6, 2016 | 06:11 AM
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When an engine becomes tired, or weak, the signal to the carb becomes less, losing it's ability to wick fuel up thru the jets, requiring a larger jet orifice size.
Perform a leakdown test, and compression test for starters.
Do not overlook the camchest area for any lifter/camshaft issues.
Scott
 
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