 Running Problems, 3 and 4 are not firing |
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| solex |
 Jan 19 2009, 08:38 PM
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#1
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Senior Member  Group: Members Posts: 789 Joined: 12-January 05 From: Long Island, NY Member No.: 3,439 Region Association: North East States  |
Hi All,
Just got around to starting the car after a top end rebuild. I replaced all of the electrics but it appears that 3 & 4 are not firing any suggestions would be appreciated. The only thing I did not replace was the condenser (rotor, cap, plugs, wires-magnecore) If it is injector related what is the safest way to check? Thank you, Dan |
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Replies(1 - 9)
| jd74914 |
Jan 19 2009, 08:46 PM
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#2
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Its alive Group: Members Posts: 4,782 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
Is it Djet or Ljet?
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| solex |
Jan 19 2009, 10:25 PM
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#3
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Senior Member Group: Members Posts: 789 Joined: 12-January 05 From: Long Island, NY Member No.: 3,439 Region Association: North East States |
DJet, 2.0L currently in a 75. I have HAM heads, with new Mahle Euro Pistons and Cylinders.
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| ws91420 |
Jan 19 2009, 10:44 PM
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#4
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Yes I have one a Lensley 914 Group: Members Posts: 2,063 Joined: 10-September 03 From: Ruther Glen,VA (halfway between sticks and civilization) Member No.: 1,137 Region Association: MidAtlantic Region |
Check your connections on the injectors and connection at dsitributor trigger points. May be trigger points in dist. You can use noid light to check and see if current is getting to the injectors. Noid lights can be found at your local FLAPS.
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| r_towle |
Jan 19 2009, 11:08 PM
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#5
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Custom Member Group: Members Posts: 24,591 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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Could be the FI trigger points in the distributor.
Could be the wiring (may have put the wires on the wrong injectors) Could be the ground for the injectors (under the plenum, top case bolt...white wires on a star spade mount) To start with, flip the wiring, one injector for the other. Obviously check your fuel routing and fuel pressure. Check your spark by grounding out a plug. Rich |
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| SirAndy |
Jan 19 2009, 11:42 PM
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#6
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Resident German Group: Admin Posts: 41,688 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(r_towle @ Jan 19 2009, 09:08 PM)  Could be the FI trigger points in the distributor. (IMG:style_emoticons/default/agree.gif) |
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| ClayPerrine |
Jan 20 2009, 07:42 AM
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#7
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Life's been good to me so far..... Group: Admin Posts: 15,537 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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Check to make sure that you didn't switch the plug wires.
BTDT.. easy to do, and the way the firing order is on a Type-IV engine, you can cross 3 and 4 and it won't backfire, it just won't run on those two. |
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| Dave_Darling |
Jan 20 2009, 09:08 AM
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#8
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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Not trigger points; those go in 1/4 2/3 pairs.
Check your spark; use an extra plug taped with the threads or outer electrodes against a ground--like the fan shroud. When the starter cranks, the plug should spark. --DD |
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| solex |
Jan 20 2009, 03:24 PM
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#9
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Senior Member Group: Members Posts: 789 Joined: 12-January 05 From: Long Island, NY Member No.: 3,439 Region Association: North East States |
Thanks, guys I will check the spark again and report back....
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| solex |
Jan 25 2009, 11:20 AM
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#10
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Senior Member Group: Members Posts: 789 Joined: 12-January 05 From: Long Island, NY Member No.: 3,439 Region Association: North East States |
It was the ground. I checked the spark and there was none. Since I had all the sheet metal powder coated the ground on the plenum was not actually grounded, I moved the wiring harness ground to the back of the case and the car started right up and is running....
All I have to say is wow it feels really good to drive the car again after over a year of engine rebuild and a new-born. Although I have not posted in a while I really do appreciate this site and all that have helped.. Thank you, Dan |
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