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Thread: Slide intake vac line question
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06-04-2020, 07:38 AM #1Junior Member
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06-06-2020, 04:58 AM #2
Cap it off.
Bud Conner "Heathen" "Defending Our Constitution"
FOR ALL ENGINE APPLICATIONS
DRY Film Lubricant for Piston Skirts & Cranks + Thermal Barrier Ceramic Coatings for Piston Tops, Combustion Chambers, Valves etc !!
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Dave Strong liked this post
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06-07-2020, 11:09 AM #3
Could be used on older analog vac TPI.
Dave1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
1988 BAJA Sunsport 186, 96 225 Pro Max
79 12' Auminum, 95 Merc 9.9
RIP Stu
"So many idiots, so few bullets"
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06-09-2020, 09:07 AM #4Junior Member
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Thanks... Capped it off and cleaned all the lines and fittings. wow, what a difference!
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06-21-2020, 05:43 PM #5Junior Member
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so i spoke too soon. It idled fantastic. Put it in the drink and as soon as i get on the throttle it starts to rev up and then bogs right down to idle. from idle i can repeat that process time after time. As soon as i take that plug off and leave the line open it revs up fine...... but caps out at about 6-6500 RPM. it pulls very hard through 6k then falls flat. I put in new plugs and took a look at them after a 30 min run and they are all soaked. It looks to me like ECM is stuck in rich mode but i dont know how to confirm that. so far i have;
- replaced all the plugs
- cleaned all the vac lines
- Cleaned harness and ecm plugs
- new rectifier
- new battery
- new regulator
One other strange issue was that occasionally when it hit 6-6500 rpm my guages will randomly stop working (then pick up after a second). Would a weak high side on the stator cause that to happen.
Thanks again for any help / suggestions. New to high perf Mercs and trying to figure it all out.
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