 2056 still working out the bugs |
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| jmargush |
 May 13 2014, 03:04 PM
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#1
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Member  Group: Members Posts: 470 Joined: 8-June 04 From: Goshen, IN Member No.: 2,176  |
I am sorting out my recently built 2056 specs below:
2.0 Heads were done by Len Hoffman CR 8.56:1 Full Raby valve train kit Stock L-jet throttle body, air cleaner, and intake runners stock 2.0 heat exchangers pertronix ignition It has a miss under hard acceleration. All the vacuum lines and oil cap gaskets are new and I can't seem to find a leak any where. So I decided to recheck the timing. Pulled vac lines off the vacuum diaphragm and plugged, set idle to 800 rpm timing was a little more advanced than it should be but not dramatically, but I did reset to factory setting. Drove it and it is even worse than before. Would the new engine combo warrant a different timing? Fuel filter is new but my next step is to check fuel pressures and injectors. Anything else I should be looking for? |
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| jmargush |
May 16 2014, 02:55 PM
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#2
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Member Group: Members Posts: 470 Joined: 8-June 04 From: Goshen, IN Member No.: 2,176 |
Thanks
Does the kit give pretty good instructions for installation? I checked all the injector sprays today and everything looks good but I still have the bad miss. Does anyone know how the vacuum diaphragm on the distributor works? One side is to retard the timing correct? does the other side advance it as the vacuum drops or changes? Should I have noticeable vacuum on that hose when i pull it of the diaphragm? |
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| Mblizzard |
May 16 2014, 03:39 PM
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#3
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
QUOTE(jmargush @ May 16 2014, 12:55 PM)  Thanks Does the kit give pretty good instructions for installation? I checked all the injector sprays today and everything looks good but I still have the bad miss. Does anyone know how the vacuum diaphragm on the distributor works? One side is to retard the timing correct? does the other side advance it as the vacuum drops or changes? Should I have noticeable vacuum on that hose when i pull it of the diaphragm? See the Cap'n expiation in post 18 here. The kit is less than detailed. But it does say where to mount generally but it does not say drill a 21 mm hole. I had something similar and found I had a poor connection on one of the injectors. Get your multi meter out and trace down all of the injector leads from the brain (ECU) to the injector connection. Move the injector wires around while checking continuity and see if you have a break. Sorry the picture I posted was useless to you with the L-jet as the all fire at the same time. Attached image(s) 
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Posts in this topic
jmargush 2056 still working out the bugs May 13 2014, 03:04 PM
Mblizzard I only suggest this because I have done it :headba... May 13 2014, 03:20 PM McMark You should have a Wideband O2 sensor in there befo... May 13 2014, 03:29 PM
Mblizzard
You should have a Wideband O2 sensor in there bef... May 13 2014, 04:52 PM jmargush
You should have a Wideband O2 sensor in there be... May 14 2014, 02:53 PM Mblizzard
[quote name='Mblizzard' post='2037083' date='May ... May 14 2014, 03:24 PM 914_teener He has L-jet not D-jet. May 13 2014, 03:59 PM Cupomeat Can I assume that this L-Jet system was working fi... May 13 2014, 04:04 PM jmargush For the wide band O2 do you weld that into the hea... May 13 2014, 04:24 PM Dave_Darling once warmed up and you come to a stop the idle won... May 13 2014, 06:03 PM Porschef How does it perform on a cold start?
:popcorn: May 13 2014, 05:00 PM Mblizzard Also check your injector seals. I had a pretty go... May 13 2014, 05:02 PM jmargush Cold start performance is pretty much the same I j... May 13 2014, 06:45 PM Java2570 The AEM air fuel gauge I bought included the O2 se... May 14 2014, 03:28 PM Mblizzard I have a Bursch exhaust. There is a good location ... May 14 2014, 05:29 PM Java2570 I hear ya on the back crap, I didn't start ha... May 14 2014, 05:42 PM jmargush Stock heat exchangers with a Thunderbird exhaust w... May 14 2014, 06:52 PM Mblizzard
Stock heat exchangers with a Thunderbird exhaust ... May 14 2014, 07:04 PM jmargush Well the new diaphragm on the distributor didn... May 15 2014, 01:57 PM Java2570 Did you ever get a check on what your fuel pressur... May 15 2014, 02:36 PM jmargush I should get the pressure checked tonight so maybe... May 15 2014, 03:07 PM jmargush Fuel pressure was 35psi at idle and dropped to 30p... May 15 2014, 07:36 PM Mblizzard Ok here are the pics of my sensor location on a Bu... May 16 2014, 02:33 PM markyb
I am sorting out my recently built 2056 specs be... May 16 2014, 05:43 PM jmargush It's a 74 but I put the L-jet on because I kne... May 16 2014, 08:41 PM Bleyseng If everything thing is setup correctly and no vacu... May 17 2014, 04:56 AM |
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