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01-04-2008, 07:28 PM | #1 |
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Join Date: Aug 2007
Location: Shawnee, Oklahoma
Posts: 28
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Horrible BOG!!!
I have a 1971 short wide that has developed a horrible bog. It runs fine down the highway but if you try to lay rubber it bogs and dies. If you let up on the throttle a little it begins to clear and slowly builds RPM but I don't have any other idea what it could be. I changed carbs, plugs, wires, distributer cap and rotor. It idles fine and starts very easy, but it runs like crap if you hit the gas with any sense of urgency. This problem came from nowhere. SOME PLEASE HELP!!!
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01-04-2008, 08:32 PM | #2 |
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Re: Horrible BOG!!!
we had a '94 suburban with the EXACT same prob we changed map sensors and everything but it turned out to be the $8 fuel filter so u may wanna try that
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Travis
travis_moffatt@hotmail.com 1969 Chevrolet C-10 LWB, 350c.i., TH350, In Pieces. 1991 GMC Sonoma, IROCS s10 grill 1963 Ford Galaxie 351/C4 |
01-04-2008, 08:44 PM | #3 |
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Location: Nebraska
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Re: Horrible BOG!!!
i would say fuel pump or filter. you say you switched carbs so that counts out the accelerator pump. it could also be slipped timing chain.
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01-04-2008, 08:46 PM | #4 |
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Location: Raleigh, NC
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Re: Horrible BOG!!!
Vote #3 for the fuel filter. Had this happen to my first truck when I was 16 and had no clue...
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-Chris Building a stripper, one part at a time: 1969 K5, 307, 3spd, 3 seats, hard top. Added Pwr Discs, Pwr Steering, Aux Battery, T-case Skid, Lighted Sidemarkers, HEI, Lock-Right Diff, ECE Class IV Hitch, 32" MT/Rs. Parts to Install: Hand Throttle, Console, Tow Hooks, Dual Horns, AM-FM, Dealer Swing-Away Tire Carrier, Gas Tank Skid. Also building a 1950 Willys CJ-3A and off-roading a 2001 Nissan Frontier on 1-Ton Portals... |
01-05-2008, 01:42 AM | #5 |
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Re: Horrible BOG!!!
what would be a good fuel filter. My truck has an inline fuel filter and mine has been doing that here lately.
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01-05-2008, 03:56 AM | #6 |
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Re: Horrible BOG!!!
Whatever fuel filter you get, don't get the cheap glass see through filters. If you have a Q-jet, just get a stock filter. I like the fat metal filters with the seam in the middle of them. Auto Zone has chrome ones. If you don't see it, then just go to the filter section and find a universal fit filter.
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01-05-2008, 06:56 PM | #7 |
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Location: choctaw, oklahoma
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Re: Horrible BOG!!!
personally I think it is the driver!!!!LOL
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01-05-2008, 07:36 PM | #8 |
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Location: Desert Southwest
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Re: Horrible BOG!!!
Check your ignition timing, make sure both the vacuum advance and mechanical advance are working and the right amount. Lake a look at vacuum lines to make sure yo have no leaks or disconnected hoses.
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01-05-2008, 07:43 PM | #9 |
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Location: Studio City, Calif.
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Re: Horrible BOG!!!
There's also the sock on the fuel pick-up in the tank that gets clogged with rust and crud. Check that and any rubber connections on the fuel line that have gotten old and collapse with the suction crated by the fuel pump ahead.
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme. |
01-05-2008, 08:25 PM | #10 |
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Location: Pace, FL
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Re: Horrible BOG!!!
Make sure fuel tank is venting properly as well and not creating a vacuum inside.
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1942 Master Deluxe 1969 C/10 1985 Blazer CUCV 1987 Jimmy 2004 Tahoe 2005 Silverado 1500 2005 Silverado 3500 |
01-06-2008, 03:48 AM | #11 |
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Location: Villa Rica Ga
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Re: Horrible BOG!!!
yeah i agree you got a fuel dilevery problem. check from tank to engine, see where its getn hung up..
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01-06-2008, 05:09 AM | #12 |
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Re: Horrible BOG!!!
if my truck had a horrible BOG aka "big ol girl" in it it would probably run like crap too! j/k
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71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400 Last edited by BB72CHEVKT; 01-06-2008 at 09:58 AM. |
01-06-2008, 09:54 AM | #13 |
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Re: Horrible BOG!!!
^ Dude, that ain't even right.
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01-06-2008, 10:19 AM | #14 |
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Re: Horrible BOG!!!
I just laughed out loud!!!!
Possibly a bad signon unit in the tank. I agree this sounds like a fuel delivery issue.
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Rottenwood Garage 1970...71...72 C1500 aka Orange aka Sideshow Bob 540 BB Straub Roller Cam, AFR Magnums, XP 950, TKO 600 2 Tons of Fun |
01-06-2008, 02:52 PM | #15 |
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Join Date: Aug 2007
Location: Shawnee, Oklahoma
Posts: 28
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Re: Horrible BOG!!!
I bought a couple of filters today and will see what I can find out this weekend. Oh and I don't think my right foot could malfunction that bad!!! LOL...
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01-09-2008, 01:35 PM | #16 |
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Join Date: Aug 2007
Location: Shawnee, Oklahoma
Posts: 28
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Re: Horrible BOG!!!
Well, I changed the fuel filter, which was very ditry I might add, and tried it again, no luck. I checked to make sure that the vaccum advance was working and it does, no leakes in any of the hoses. I drove the truck with the gas cap off to see if it was pulling a vaccum on the fuel tank, not it either. The only thing I haven't tried is to reset the timing. I don't have a timing light so I'll have to wait until I can get one.
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