 Another 'bucking' question…. |
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| Larmo63 |
 Nov 13 2014, 07:30 PM
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Advanced Member  Group: Members Posts: 4,267 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California  |
After the third set of old heat exchangers on my '73 1.7 FI, I finally buttoned up exhaust leaks and now the car has started bucking/hesitation. All new ignition parts, timing, TPS exchanged with a new one, no difference. No known vacuum leaks. I can drive the car and it has power, but I have to drive "around" the hesitations. Fuel pump was replaced too. I'd like it to run better while I finish the 2056 carb engine. Ideas? (IMG:style_emoticons/default/headbang.gif)
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| DRPHIL914 |
Nov 19 2014, 06:47 AM
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Dr. Phil Group: Members Posts: 5,821 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States 
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my last TPS was a replacement board and brand new, but was still bucking so i thought for a long time that it had to be something else. But i recently got a really nice clean slightly used original TPS from Bruce Stone and since installing it and getting it set in the right position it does not buck - at all. I would suggest that you try a different one again and make sure it is set correctly.
I had some other similar issues with idle that seemed like it was vac leak, but ended up being a bad CHT as someone here suggested earlier- cheap part test it and replace it. I now have 2 extras because it can cause wierd issues or even keep the car from running- Have you checked your injection trigger points plate? just a thought as well. do onet thing at at time and yess it can be a process of elimination. |
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Posts in this topic
Larmo63 Another 'bucking' question…. Nov 13 2014, 07:30 PM
krazykonrad My guess is the MPS diaphragm has worn out. That c... Nov 13 2014, 08:28 PM mepstein Check all grounds and electrical connections aroun... Nov 13 2014, 08:33 PM 914_teener
After the third set of old heat exchangers on my ... Nov 13 2014, 08:36 PM r_towle Describe the bucking in more detail....
Accel or ... Nov 13 2014, 09:09 PM Larmo63 Mostly during acceleration. It doesn't want to... Nov 14 2014, 09:38 AM rjames Check all fuel delivery items from the filter to t... Nov 14 2014, 11:12 AM Larmo63 We only worked on sealing up the intake system. Ne... Nov 14 2014, 06:31 PM
Jasfsmith
We only worked on sealing up the intake system. N... Nov 17 2014, 08:59 AM
Philip W.
We only worked on sealing up the intake system. N... Nov 19 2014, 07:04 AM Gcotton92203 I had that problem twice. I found a leak at the va... Nov 14 2014, 06:43 PM r_towle Sounds lean.
Check injector seals?
Not visible, bu... Nov 14 2014, 06:59 PM 57lincolnman
After the third set of old heat exchangers on my ... Nov 14 2014, 09:03 PM larss Did you change to a new TPS or only to a new TPS c... Nov 15 2014, 12:27 AM dknechtly Since it's on acceleration, check that your va... Nov 17 2014, 08:43 AM colingreene quote name='dknechtly' date='Nov 17 20... Nov 19 2014, 03:38 AM |
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