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 lag on take off and through gears

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RobGrob9109

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Join date : 2012-01-09
Age : 26
Location : fair oaks

PostSubject: lag on take off and through gears   Thu Jul 18, 2013 4:12 pm

hey ive got a 57 oval with a 1776 in it all of a sudden it started sounding quieter and quieter. when driving it also started to almost have a putter effect unless i gassed it up real good. so i drove it home after making sure i had fuel and now its sitting in the drive. i checked the dual carbs and they are synced. checked the fuel and tank is full. replaced the fuel pump in case if the carbs werent getting any gas and that is fine. checked the timing and then tried taking it for a test drive and is now even worst. i can get it to drive but it seems like it is trying VERY hard in the gears not like it should be. idles just fine and sounds great but when trying to drive it just boggs out now. i am going to check the valves in a little while to see if they need to be adjusted and i might even pull the spark plugs to make sure im not running on just one sparkie...

any other ideas? or easy fix like oh yeah just adjust this... otherwise i am lost

check list:
dual carbs sync'd
timing good
fuel pump replaced (in case if)
oil is fine


going to check valves and then sparkplugs and see if any change

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Jeff67Sqbk

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Join date : 2011-07-15

PostSubject: Re: lag on take off and through gears   Thu Jul 18, 2013 4:30 pm

Replace your fuel filter. Gunk in there allows flow idle, but doesn't at higher flow rates.
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Jeff67Sqbk

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PostSubject: Re: lag on take off and through gears   Thu Jul 18, 2013 4:32 pm

Have you changed brands of fuel recently and have a full tank of new brand gas? I had problems with certain brands in my Vanagon. It didn't like Beacon or AM/PM gas.
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RobGrob9109

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Location : fair oaks

PostSubject: Re: lag on take off and through gears   Thu Jul 18, 2013 4:37 pm

i just changed the fuel filter but i guess i can take a look it it i changed it about 3-4 weeks ago in june

i currently have a full tank of gas from AMPM and i only have been using 87 should i use a higher octane?
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silvertonguedevil
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Join date : 2011-01-13
Age : 40
Location : Seaside, Oregon....er, I mean California

PostSubject: Re: lag on take off and through gears   Thu Jul 18, 2013 5:31 pm

In addition to the fuel filter, you might have a plugged up fuel line. I've had plugged up fuel lines in two of my bugs thus far. I had to "snake" out the line inside the tunnel to blast through it.
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Jeff67Sqbk

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PostSubject: Re: lag on take off and through gears   Thu Jul 18, 2013 5:50 pm

Don't change octane, that won't help anything. It may even cause other symptoms. Have you consistently used AMPM? If you have, then it isn't likely the gas. If you just went there after going somewhere else for a period of time, then the gas comes into play. I had to change out filters in the Vanagon after getting Beacon or AMPM gas.

On Greg's response, there is a safe way to disconnect the fuel line after the pump, and run the pump to check flow, but that's not something I have done often enough to provide instructions. As always, keep a fire extinguisher at hand. Dangerous stuff, gas.
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RobGrob9109

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PostSubject: Re: lag on take off and through gears   Fri Jul 19, 2013 4:28 pm

i just replaced the gas lines and filter on june 17 would it be clogged already and im a college kid so i ALWAYS go to the cheapest gas AMPM hahaha
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silvertonguedevil
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Location : Seaside, Oregon....er, I mean California

PostSubject: Re: lag on take off and through gears   Fri Jul 19, 2013 6:06 pm

I'm referring to the metal line in the tunnel. Some dirt, debris, or rust could have broken loose from inside the tank.
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Mateo
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Age : 49
Location : North Auburn

PostSubject: Re: lag on take off and through gears   Sun Jul 21, 2013 4:45 pm

Which dual carb setup do you have? Sounds like a plugged jet(s).

Did you check those???? Sounds like you checked everything else.

Typically, in my experience, the car will idle but you won't get any power out of it...

I run straight up velocity stacks and I can immediately tell when I have sucked something into a jet.

I can almost clear one at a red light now... scratch 

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RobGrob9109

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PostSubject: Re: lag on take off and through gears   Sat Jul 27, 2013 4:21 am

how do you check the jets? it sounds like it is dumping gas and definitely smells like it as well. i have dual solex carbs on the 1776 you can buy at bugfromance.
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