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#1 |
Registered User
Join Date: May 2006
Location: annapolis md
Posts: 28
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bogging at 50mph
this is a odd symptom that happened last week and i have no clue what it could be.
69 c10 2wd 230 inline6 truck starts perfectly, idles perfectly and runs perfectly, up until 50mph. once i pass 50, the truck jerks almost like a fuel problem. jerks back and forth hard. if i take my foot off of the gas immediately, i can keep it running once the speed drops. if i keep the gas steady it will die, but starts up right away and idles again perfectly. below 50, i can floor the pedal without any bogging. i noticed a torn up alternator belt, so i replaced that. did not fix the issue. i am clueless. any ideas? |
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#2 |
Registered User
Join Date: Oct 2006
Location: Springfield, MO
Posts: 375
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Re: bogging at 50mph
This may not be it, but...when mine does that, it's been the fuel filter.
__________________
1969 C/10 swb, 350, powerglide (daily driver) 2005 CRV (wife's ride) |
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#3 |
Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: bogging at 50mph
I had a similar problem with mine and it was because the fuel pump suction hose was collapsing.
Danny - Southeast Missouri |
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#4 |
Registered User
Join Date: Apr 2004
Location: Covington,Ga
Posts: 453
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Re: bogging at 50mph
I vote fuel filter or fuel pump.
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72 C-10 |
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#5 |
Registered User
Join Date: Oct 2006
Location: Springfield, MO
Posts: 375
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Re: bogging at 50mph
I have so much junk in my tank that I have to run an inline and in-carb filter. It's the in-carb filter that needs changing when mine does this.
__________________
1969 C/10 swb, 350, powerglide (daily driver) 2005 CRV (wife's ride) |
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#6 |
Registered User
Join Date: May 2006
Location: annapolis md
Posts: 28
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Re: bogging at 50mph
thanks everyone. i was thinking fuel also, but the way it runs at low speed (below 50) threw me trough a loop. i do not have an inline, so i will check the screen in the carb and replace the suction hose. i guess this ethanol fuel is finally starting to clean my tank and screw things up.
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#7 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: bogging at 50mph
try taking your gas cap off. it could be your cap isnt venting properly//could also be the intank filter screen on the fuel pickup
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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#8 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: bogging at 50mph
are you running E-85? That may be the problem right there.
On a side note... you probably have a 250, not a 230... unles you swapped out for it, the 230 wasn't installed in these trucks. |
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#9 |
chrome makes it go FASTER!
Join Date: Feb 2007
Location: Cleveland Tennessee
Posts: 2,884
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Re: bogging at 50mph
Could be a float problem, at high speeds your float bowl could be running dry.
No gas = bogging, a little gas = power, no gas = etc... jerking back and forth Carb rebuilds for these 6 cyl are very cheap ($10 or less) and very simple. Plus it gives you an opportunity to clean 40 years of gunk out of there.
__________________
She can't cook and she won't clean. But she looks good in a skirt and she brings me beer. She can stay for now. EDIT:: But she left me anyway, So forget her. 1962 GMC Stepside V6 4 speed My rolling resto thread http://67-72chevytrucks.com/vboard/s...d.php?t=324226 My old farm truck http://67-72chevytrucks.com/vboard/s...=1#post3465005 |
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#10 |
Registered User
Join Date: Feb 2007
Location: yuma arizona
Posts: 448
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Re: bogging at 50mph
my truck use to do the same thing and i could never figure out what it was... then i put in a v-8 and havent had the problem.... i wish my 250 was still in there!
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#11 |
Registered User
Join Date: Aug 2007
Location: Santa Fe, New Mexico
Posts: 8
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Re: bogging at 50mph
Check you plug wires too, make sure they are not arching.
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#12 |
Registered User
Join Date: May 2006
Location: Jonesboro, AR
Posts: 916
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Re: bogging at 50mph
I drove a, please excuse my French, Dodge 880 in convoy through Texas and Arkansas one summer. On the way back it was quite hot by the way. Same symptoms and it turned out to be a fuel filter keeping enough gas from getting to the fuel bowl at higher RPMs. Basically the engine would drain the carb dry.
Last edited by 71tahoe; 08-13-2007 at 06:37 PM. |
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#13 |
Registered User
Join Date: Sep 2005
Location: Villa Rica Ga
Posts: 889
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Re: bogging at 50mph
yeah put a inline filter on that bad boy somehwere. i had to put 20 on my 49 coupe..worekd like a charm..
i also had some valve problems on my 235 at one point. they were adjusted wrong. if the filter doesnt work, try adjusting the valves. |
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#14 |
Account Suspended
Join Date: Sep 2005
Location: Monroe, WA
Posts: 3,815
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Re: bogging at 50mph
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