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> 914 1.7 FI Question, Accel Enrichment injector operation
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post Jun 26 2017, 10:35 AM
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I have a 1.7 with stock injection that fires two injectors when the throttle is opened. (key on, engine not running.)

Are only two triggered or are all four?

If all four, is the TPS likely a problem source?

Where is the best Theory of Operation for this system? The big blue Bosch Book?

FWIW All of the injectors fire (in pairs) when running so the r is not a ECU, harness or injector problem.

The car is pretty lame until it gets up in the
revs.
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Retread   914 1.7 FI Question   Jun 26 2017, 10:35 AM
914_teener   The injectors firing in pairs is how it works. Ch...   Jun 26 2017, 11:27 AM
The Cabinetmaker   Injectors fire in pairs. All four won't fire w...   Jun 26 2017, 12:00 PM
Retread   I have a 1.7 with stock injection that fires two ...   Jun 29 2017, 09:50 AM
914_teener   I have a 1.7 with stock injection that fires two...   Jun 29 2017, 12:11 PM
The Cabinetmaker   https://members.rennlist.com/pbanders/DJetParts.ht...   Jun 29 2017, 10:20 AM
mgphoto   With the key on engine stopped there will be 10 pu...   Jun 29 2017, 10:31 AM
Retread   With the key on engine stopped there will be 10 p...   Jul 4 2017, 11:37 AM
914_teener   [quote name='mgphoto' post='2501455' date='Jun 29...   Jul 4 2017, 12:33 PM
914_teener   With the key on engine stopped there will be 10 ...   Jul 4 2017, 12:42 PM
BeatNavy   I thought it was like 20 pulses, but I could be wr...   Jun 29 2017, 10:40 AM
Retread   OK. Test mode: Noid Light. Engine not running. ...   Jul 3 2017, 07:46 PM
Jeff Bowlsby   Nothing seems awry from what has been presented so...   Jul 3 2017, 08:41 PM
Spoke   I didn't think it mattered where the dizzy pos...   Jul 3 2017, 09:07 PM
Retread   I didn't think it mattered where the dizzy po...   Jul 4 2017, 11:27 AM
mgphoto   Two of the pairs fire behind open valves and two o...   Jul 4 2017, 09:00 AM
Dave_Darling   Two of the pairs fire behind open valves and two ...   Jul 14 2017, 09:35 AM
Spoke   Two of the pairs fire behind open valves and two ...   Jul 14 2017, 10:36 AM
The Cabinetmaker   You guys need to do some more reading about the tp...   Jul 4 2017, 10:50 AM
mgphoto   TPS doesn't really measure position, Wide Open...   Jul 4 2017, 12:08 PM
The Cabinetmaker   TPS doesn't really measure position, Wide Ope...   Jul 4 2017, 02:00 PM
nordfisch   ... From brads djet site, Also sends a signal a...   Jul 13 2017, 06:31 PM
BeatNavy   A couple of things to keep in mind: 1. From a sep...   Jul 4 2017, 01:32 PM
nordfisch   - deleted, double post -   Jul 14 2017, 11:03 AM
nordfisch   Hi, the D-Jetronic-system was used on 4, 6, 8 and ...   Jul 14 2017, 11:17 AM
dknechtly   Be sure all your grounds are good. Also check tha...   Jul 21 2017, 08:15 AM


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