I have no ignition on the driver's side, Wha? |
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I have no ignition on the driver's side, Wha? |
RangerRhett |
Sep 21 2005, 06:22 PM
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#1
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Member Group: Members Posts: 131 Joined: 25-August 04 From: Lafayette, IN Member No.: 2,620 |
I have a '74 2.0L with FI...
Everything = Great Changed Spark Plug Wires (one at a time - all the wires are connected correctly) Everything = Not great Changed Spark Plug Wires Back = Not Great Checked all wires with a spare plug and I was getting 1/2" arc to ground...(Spark = Good) Obviously the engine is running rough! I can pull off Plug #s 1 & 2 and the engine runs exactly the same. If I pull off Plug #s 3 & 4 the engine dies. Timing = Right On I changed spark plugs 1 & 2 just in case....no change I started messing with the fuel relays. It didn't seem to change ... Also, there is no heat on the Driver's side of the engine. It is pretty cool compared to the passenger side. What the deuce is going on here...? |
Dr. Roger |
Sep 21 2005, 06:27 PM
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#2
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A bat out of hell. Group: Members Posts: 3,944 Joined: 31-January 05 From: Hercules, California Member No.: 3,533 Region Association: Northern California |
did the #1 and 2 plugs smell like fuel before changing them? or dry?
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RangerRhett |
Sep 21 2005, 06:38 PM
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#3
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Member Group: Members Posts: 131 Joined: 25-August 04 From: Lafayette, IN Member No.: 2,620 |
I never really (even now) detected any fuel odor. From the plugs or otherwise. |
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RangerRhett |
Sep 21 2005, 08:50 PM
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#4
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Member Group: Members Posts: 131 Joined: 25-August 04 From: Lafayette, IN Member No.: 2,620 |
Any idea? Anyone? Bueller?
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Gint |
Sep 21 2005, 09:06 PM
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#5
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Mike Ginter Group: Admin Posts: 16,071 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains |
If I remember right (don't count on it), the trigger points (of which there are actually two) control injectors on each side. I'm sure someone will correct me if I'm wrong. But that's where I'd start to look.
Do a search for trigger AND points and see hwere that teaches you. |
bd1308 |
Sep 21 2005, 09:07 PM
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#6
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
from what i understand, trigger points fire diagonally.....
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goose2 |
Sep 21 2005, 09:11 PM
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#7
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Senior Member Group: Members Posts: 976 Joined: 30-March 05 From: Eugene, Oregon Member No.: 3,847 Region Association: Pacific Northwest |
trigger points squirt diagonal cylinders...correct....maybe you got the plug wires crossed somehow?
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Dave_Darling |
Sep 21 2005, 09:16 PM
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#8
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914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
Check that it's getting fuel from those cylinders. Either sniff the plugs the next time you pull them out, or better yet stick the injectors into jars and observe the spray pattern.
Check the compression. After that, the only variables are "how much fuel", and "when is the spark happening". Injector points pair the cylinders diagonally. I think the grounds have the front two paired, and the rear two--but I'm not certain about that. Worth checking the ground point at the rear of the crankcase seam. EDIT: Yeah, check the #1 and #2 plug wires. Remember, #1 is the left-rear plug, and it connects to the left-front distributor cap tower!! Easy to forget that and connect the left-front to the left-front one... --DD |
JeffBowlsby |
Sep 21 2005, 09:38 PM
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#9
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914 Wiring Harnesses Group: Members Posts: 8,509 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
Injector grounds are common to each side. So cyl 1+2 injectors share a ground and 3+4. Sounds like your common injector ground is suspect.
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RangerRhett |
Sep 21 2005, 09:54 PM
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#10
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Member Group: Members Posts: 131 Joined: 25-August 04 From: Lafayette, IN Member No.: 2,620 |
I don't see how I could've gotten the wires switched. I can pull off the 1&2 Plug Wires and the way that the engine runs doesn't change!
The plugs were black and charred, but they did not smell like fuel. I am not sure about this diagonal squirting thing... What is this all about 'trigger points'...? |
Dave_Darling |
Sep 22 2005, 01:52 PM
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#11
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914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
D-jetronic injection opens the injectors in pairs. So the #1 and #4 injectors open at the same time--when the #1 intake valve is open. The fuel charge just sits there in the intake port on #4 for a half a crankshaft revolution, until the valve opens and sucks it into the cylinder. D-jet info can be found here: http://members.rennlist.com/pbanders
Check the grounds, like Bowlsby suggested. Also make sure the left-front distributor cap tower is connected to the left-rear cylinder. --DD |
lapuwali |
Sep 22 2005, 02:06 PM
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#12
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
Try swapping the plugs around and see if the problem follows the plugs.
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JohnB |
Sep 23 2005, 07:23 PM
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#13
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Member Group: Members Posts: 107 Joined: 6-June 03 From: Ashburn, VA Member No.: 794 |
How'd this turn out?
jb |
redshift |
Sep 23 2005, 07:26 PM
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#14
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Bless the Hell out of you! Group: Members Posts: 10,926 Joined: 29-June 03 Member No.: 869 |
Pull the covers back, on the wires at the dizzy. Feed them into the holes, then pull the covers down..
I bet the wires aren't seated... it's a 2-step thing. M |
RangerRhett |
Sep 25 2005, 07:53 PM
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#15
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Member Group: Members Posts: 131 Joined: 25-August 04 From: Lafayette, IN Member No.: 2,620 |
All, thanks for the advice...!
There are three ground wires coming out of the 'gray' harness near the rear of the engine. These ground the injectors. One of these wires had come loose... Simple as that... I just wish it hadn't taken me a week to figure it out! |
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