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#1 |
Registered User
Join Date: Aug 2007
Location: Shawnee, Oklahoma
Posts: 28
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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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#2 |
Registered User
Join Date: Feb 2007
Location: (Cloverdale) Surrey BC Canada
Posts: 1,566
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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 |
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#3 |
Senior Member
Join Date: Mar 2004
Location: Nebraska
Posts: 583
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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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#4 |
Senior Member
Join Date: Jan 2005
Location: Raleigh, NC
Posts: 894
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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... |
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#5 |
HERE.......Somewhere
Join Date: Oct 2006
Location: Birmingham AL
Posts: 2,488
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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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Current rides: 2013 Hyundai elantra gt DD 1995 camaro my first crush lmao Was: 1970 ![]() ![]() Classics make it possible! |
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#6 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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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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#7 |
Registered User
Join Date: Dec 2007
Location: choctaw, oklahoma
Posts: 100
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Re: Horrible BOG!!!
personally I think it is the driver!!!!LOL
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#8 |
Registered User
Join Date: Oct 2007
Location: Desert Southwest
Posts: 540
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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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#9 |
Senior Member
![]() Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,873
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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. |
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#10 |
Registered User
![]() Join Date: Dec 2001
Location: Pace, FL
Posts: 2,155
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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 |
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#11 |
Registered User
Join Date: Sep 2005
Location: Villa Rica Ga
Posts: 889
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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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#12 |
Junior Member
Join Date: Mar 2007
Location: Hideaway, TX
Posts: 4,950
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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. |
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#13 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: Horrible BOG!!!
^ Dude, that ain't even right.
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#14 |
Registered User
Join Date: Jun 2007
Location: Smyrna, GA
Posts: 709
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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 |
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#15 |
Registered User
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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#16 |
Registered User
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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