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Registered
Join Date: May 2007
Location: NH
Posts: 249
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Bucking issue when in gear.
73 911T 2.4 CIS:
Engine runs perfect in idle, however, when placed in gear, and accelerate, the car hesitates and bucks. I'm assuming that this is caused by a vacuum leak. How do I check for possible leak? or what other issue could it be? Stan |
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08-24-2011, 12:16 PM
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Join Date: Mar 2009
Location: a quiet beach town in Florida
Posts: 430
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Sounds like a clutch.
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Bill B. 63 Little B Coupe 67 SWB 3.63 Hotrod 08 Cayenne S 65 F100 |
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08-24-2011, 12:29 PM
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Join Date: Feb 2005
Location: Sacramento
Posts: 587
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could be clogged filter
I began noticing this on mine but it's still intermittent.
My clutch was replaced last year so I dont'believe it's that.
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Carl, |
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08-24-2011, 01:54 PM
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Join Date: Apr 2010
Location: New Orleans, LA
Posts: 1,493
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one way to check for vacuum leak is to spray a little carb cleaner around vacuum hoses; spraying on leak will cause idle to change.
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1982 911SC, Mocal oil cooler, Bilsteins, Carrera tensioners, backdated heat, factory short shift, Seine gate shift, turbo tie rods, pop off. 2005 Mercedes-Benz C230 kompressor sport 6-speed (daily driver) |
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08-24-2011, 02:11 PM
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Member 911 Anonymous
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Let's elliminate the clutch:
Find a deserted or very low traffic straight away. Place in 2nd and drag her up to 2K RPMs then punch it. If she pulls all the way to redline, with out hesitation, clutch is A OK. Vacuum Leak, this is a bit harder, especially if the leak is micro in size. Carefully use ether ( Starter Fluid, Spray around the Manifold/TB/all hose connections. Do this a little at a time so to reduce it from going into your air filter and create a false positive. But before this, in a dark garage, open the lid turn the car on and spray mist of water around the plugs/cap to look for errand sparks. You do not want sparks while using starter fluid.  Jim
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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08-24-2011, 03:01 PM
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Join Date: May 2007
Location: NH
Posts: 249
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Thank you everyone for your input. I'm happy to say that I found and resolved my issue. (fuel filter) My fuel filter was hanging in mid air supported by the hoses at each end. When I lifted one end of the fuel filter the engine would stop. I replaced it with a new filter and the car runs beautiful again. I see where the fuel filter was supported to the left side, however, I cannot find the clamp or hardware that supports this filter. Does anyone know what it looks like? or where I might be able to purchase one?
Thank you, Stan Last edited by Stan Gillis; 08-24-2011 at 04:25 PM.. |
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08-24-2011, 04:23 PM
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Member 911 Anonymous
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Oh Cool, easy fix.
Check salvage yard for the bracket.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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08-24-2011, 05:30 PM
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Join Date: Feb 2005
Location: Sacramento
Posts: 587
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I told you it was the filter. lucky guess on my part.
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Carl, |
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08-24-2011, 09:42 PM
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Registered
Join Date: May 2007
Location: NH
Posts: 249
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Thank you, Carl. You were right. Now I need to figure out how to support the hanging fuel filter. If anyone has any suggestions, or picture of what it should look like, please chime in.
Stan |
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08-25-2011, 04:41 AM
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Marble Grey
