 Bucking with initial acceleration, D-Jet |
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| Montreal914 |
 Dec 31 2015, 06:05 PM
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Senior Member  Group: Members Posts: 1,559 Joined: 8-August 10 From: Claremont, CA Member No.: 12,023 Region Association: Southern California 
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I've been trying to solve an issue that makes the driving rather unpleasant (IMG:style_emoticons/default/headbang.gif)
I have a 2056 D-Jet that I daily drive. Recently I replaced the fuel filter and since then, the car has developed this behavior which I don't see why it would be related. When I put in first gear and get going, the car doesn't pick up and is bucking. As I progressively press on the pedal, it suddenly picks up and gets going normally. While it's trying to get going, I've noticed that my A/F gauge tends to go lean and out of range. Things that came to my mind: faulty throttle switch which influences the fuel delivery, hence lean. On the TPS, I checked the open/close circuit of the 2 traces with the 10 switches and everything is good. Idle switch kicks in also. I checked the resistance of the whole D-Jet harness on the 25 pin connector at the CPU as suggested by Anders and everything is within range. Replaced the points and adjusted Dwell. Fuel pressure is set at 29psi (analog gauge inline). I swapped the TPS, the CPU, the MPS, the coil without any improvement. I'm running out of ideas... (IMG:style_emoticons/default/sad.gif) Maybe someone has experienced something like this (IMG:style_emoticons/default/confused24.gif) |
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Posts in this topic
Montreal914 Bucking with initial acceleration Dec 31 2015, 06:05 PM
jim_hoyland Possible kinked fuel line or CHT wire is not fully... Dec 31 2015, 06:10 PM
Montreal914
Possible kinked fuel line or CHT wire is not full... Dec 31 2015, 06:19 PM r_towle It was fine before you changed the fuel filter?
Is... Dec 31 2015, 07:54 PM Montreal914 Filter in correct orientation. No pinched lines.
I... Jan 1 2016, 05:42 PM saigon71 If everything else is good, I suspect your CHT cir... Jan 1 2016, 06:23 PM Montreal914 Resistance value of CHT at room temp is ~2200 ohm,... Jan 2 2016, 06:23 PM Mblizzard What year is the motor? If it is a 73 then the Ba... Jan 2 2016, 09:54 PM Montreal914
What year is the motor? If it is a 73 then the B... Jan 3 2016, 12:54 AM jim_hoyland
What year is the motor? If it is a 73 then the ... Jan 3 2016, 09:46 AM Spoke Does it do this when cold and hot?
Does accelerat... Jan 2 2016, 10:57 PM Montreal914
Does it do this when cold and hot?
Does accelera... Jan 3 2016, 01:07 AM Spoke
I revisited my Dwell adjustment that ended up bei... Jan 3 2016, 09:33 AM Dtjaden Are you rechecking the timing after you change dwe... Jan 3 2016, 01:36 AM Montreal914 Will recheck timing and variable resistance wire.
... Jan 3 2016, 10:49 AM 914_teener I had a very similar problem a while back. Cutting... Jan 3 2016, 01:22 PM nordfisch Hi, might be a good idea to check it out by replac... Jan 3 2016, 03:17 PM steuspeed Could be a vacuum leak. I had similar symptoms on ... Jan 3 2016, 05:26 PM McMark Check your motor mounts. If they both break it... Jan 4 2016, 07:52 AM  |
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