 HELP! cylinder #3's got the devil in him |
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| hasaramat |
 Oct 10 2011, 10:53 PM
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#1
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Member  Group: Members Posts: 80 Joined: 23-November 08 From: Utah Member No.: 9,782 Region Association: None  |
Well after about 12 years sitting the 914 finally came out of the garage and ran up and down the street!!
 It runs but a bit on the rough side. I cannot get cylinder number three to wake up. When I pull the injector plug off the other three cylinders the engine "lumbers" but with number three nothing happens. Here is what I have done: 1- re-adjusted valves the captn's way, didn't need it 2- pulled the injectors and check for spray 3- compression test 118 psi 4- pulled the spark plug and checked for spark (it got me) 5- put #3 injector wire on #4 to make sure there was a signal 6- checked ground to number three injector wires 7- put another injector in #3 8- motor runs with no knocking "other than type IV noise" 9- when I drive it the motor seems to wake up at about 3000 rpm 10- new NGK plugs It is a 1974 2.0 with euro pistons and everything else is stock. I hope someone can give me a "OOH I haven't tried that" Any help would be gratefully accepted. |
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| pcar916 |
Oct 11 2011, 05:00 AM
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#2
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Is that a Lola? Group: Members Posts: 1,523 Joined: 2-June 05 From: Little Rock, AR Member No.: 4,188 Region Association: None 
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Are the injectors spraying the same amount of fuel?
After sitting for so long I've had to get them professionally cleaned. That goes for both electrical and CIS (K-jetronic) types. If you have air, gas, and fire and no exhaust obstruction) then one of them is off or out of sync. That said, I have no experience with those computers and whether or not they're capable of making this happen. |
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| Bartlett 914 |
Oct 11 2011, 05:27 AM
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#3
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Advanced Member Group: Members Posts: 2,218 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest |
check the compression on all cylinders.
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| willamp |
Oct 11 2011, 06:36 AM
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#4
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Drivin' in Texas Hill Country Group: Members Posts: 76 Joined: 1-October 10 From: Austin, Texas Member No.: 12,232 Region Association: None |
Even though you got a spark on number 3 wire I would suggest to swap or replace the wire with a different one. I had intermittent problems recently that turned out to be a bad spark plug wire. I think even though it would allow a spark it was weak and so the cylinder wouldn't fire under all conditions. It's a cheap thing to try.
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| FourBlades |
Oct 11 2011, 06:43 AM
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#5
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From Wreck to Rockin Group: Members Posts: 2,056 Joined: 3-December 07 From: Brevard, FL Member No.: 8,414 Region Association: South East States
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Spark color should be blue/white and not red or orange. John |
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| hasaramat |
Oct 11 2011, 07:28 AM
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#6
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Member Group: Members Posts: 80 Joined: 23-November 08 From: Utah Member No.: 9,782 Region Association: None |
The spark color did seem a little orange. I will change the cap, rotor and wire to see if that will help. I did check compression in #4 and it was 120 psi but I should check #1 and #2.
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