94 115 Evinrude still crossfiring ign.

[drackley]

This has certainly been an ordeal. It's been now some 4 months of trying to get it running correctly. I recently posted a message indicating that the ignition was crossfiring between 1 and 3 and 4 was firing on borth 2 and 4. It was suggested that the new CDI powerpack was bad. It has been replaced (as well as the timer base, all coils, plug wires, plugs twice and carbs three times). All electronics test good using step by step proceedures in the factory manual (done at least three times). I'm at a lose as to understand the rough running, and crossfiring as well as poor idle. Ignition timing is set correctly. Is this cross fire usuall? Platform is a 1994 JEER 115 evinrude crossflow V4 overhauled in March and still has not seen water. I could use a hand and am willing to pay for the help and phone calls. Dirk

 

[Xcusme]

Re: 94 115 Evinrude still crossfiring ign.

This is going to be a real shot in the dark...is it possible that you have a RFI or EMI problem causing the cross firing in the power pack??

 

[Hooty]

Re: 94 115 Evinrude still crossfiring ign.

(^) Bump

 

[Hooty]

Re: 94 115 Evinrude still crossfiring ign.

Xcuseme might be onto something. Disconnect the rectifier and see if you still have a crossfire.<br /><br />c/6<br />Hooty

 

[clanton]

Re: 94 115 Evinrude still crossfiring ign.

No Quick Start this engine. Did you do page 3-21-22 of service manual? Have you check the pins in connector from timer base to power pack, are pins clean? Do you have correct timer? The charge coil output should be 150 volts and pack output 150 volts with peak reading meter. If you are using an adapter, meter should be set on DC scale, or follow instructions with adapter. Do not understand CD14 power pack. The wire colors to coils from pack are orange/blue to #1, orange/purple to #2, orange/green to #3, orange/cant see color to 4. If you have factory manual with wiring diagram, I would check all wires for shorts, and correct connections. The connector for sensors wires A,B,C,D,and E should be clean and dry.

 

[drackley]

Re: 94 115 Evinrude still crossfiring ign.

Clanton. I'm not sure what reference you are making in the manual as mine is a Turbo Jet manual and pages are probably different. The connectors for the timer base are all coded correctly in relation to the power pack, and voltage output from the timer base and charge coils are 150+ volts. I'm curious about the reference to the rectifier and no slow start on the engine. Could the rectifier be a problem? I greatly appreciate everyones help on this. It's now the end of boating season, and I've got $1200+ in an engine that won't run right but checks out good.

 

[clanton]

Re: 94 115 Evinrude still crossfiring ign.

Do you have turbo jet or outboard? Regulator should not be a problem, you could disconnect the two yellow wires from stator to regulator and try it. when you disconnect the yellow wires, they must not be allowed to touch the block and become grounded, tape the wires. Look in the ignition section for Indexing Flywheel,Erratic ignition. You should also bring number 1 piston to top of cylinder and check the TDC mark with indicator on block. The part numbers for the pack and timer are 584030, and timer 583379. What kind of plug wires?

 

[clanton]

Re: 94 115 Evinrude still crossfiring ign.

If you are using an induction pickup timing light, open the pickup so that there is a small air gap in n the pickup, or cover with tape. If the double firing disappears, and the engine runs ok, try different timing light.

 

[ob]

Re: 94 115 Evinrude still crossfiring ign.

Here's yet another shot in the dark.Did you or whoever overhauled the engine remove and reinstall the flywheel?Was it torqued to the right spec.I'm wondering if the flywheel key isn't sheared.

 

[drackley]

Re: 94 115 Evinrude still crossfiring ign.

Flywheel key is OK. It is an inductive timing light. Flywhell was maked with all the cylinder numbers, and that is how I know about the crossfire. When moving the light around to different cylinders I'm seeing both one and three when hooked up to number one. It is a Turbo Jet, but basicly that's just an Evinrude 115 V4 crossflow. TDC was set by proceedure outlined in the manual. Plug wires are stock and were tested. One was replaced due to a split in the boot. All connections to coils, and timer base to power pack have been checked.

 

[The Marine Doctor]

Re: 94 115 Evinrude still crossfiring ign.

Multi fire is caused by the timerbase or the powerpack.<br /><br />Generally the powerpack switch that is driven by the timer base stays fused closed and allows the spark to free flow. There is no timing for that cyl as it fires all the time.<br /><br />TMD

 

[clanton]

Re: 94 115 Evinrude still crossfiring ign.

When you see double firing, most of the time it is the power pack. If you got the pack from Rapair, they are very good at helping solve problems. Try this number 866-CDI-TECH for tech support. Did you check the small magnet on the flywheel, should only cause out of time, not double firing. Be back about 9:00 EST.

 

[drackley]

Re: 94 115 Evinrude still crossfiring ign.

The power pack was just put in yesterday, and was a warrenty replacement for the new one that was in it. All tests of the timer base read good and it was replace during this ordeal. This is why this has become so frustrating. I'll go run all the tests again, and post the results.

 

[Hooty]

Re: 94 115 Evinrude still crossfiring ign.

This iz why I bumped your original post up with this one. When you start a new post, no one knows what's already been done.<br /><br />c/6<br />Hooty

 

[drackley]

Re: 94 115 Evinrude still crossfiring ign.

Point taken Hooty. I started another since the other had been dormant for some time, and I had further information. I'll focus on this thread only.

 

[clanton]

Re: 94 115 Evinrude still crossfiring ign.

Take a break from the engine for a day or two, then start again, step by step using the OMC manual, dont skip any steps.

 

[R.Johnson]

Re: 94 115 Evinrude still crossfiring ign.

If you pull the flywheel again, check the trigger magnet on the hub of the wheel. This magnet is glued on, and can come loose. Although I can't see how this would cause double firing.

 

[drackley]

Re: 94 115 Evinrude still crossfiring ign.

Test results:<br />Digital volt meeter with Stevens PVA, and Stevens power pack load adapter.<br /><br />Charge coil:<br />A B tested to ground. No voltage<br />A to - B to + 204 volt<br />Resistance A to B 410 ohm<br />A B test to ground No short<br /><br />Timer base:<br />Each wire to ground No voltage<br />Pin E to others 1.42, 1.34, 1.45, 1.33 volts<br />Each wire to E ohms 42.6, 42.6, 42.2, 42.5<br />Each wire to ground No short<br /><br />New Power pack:<br />Primary wire volts 172, 172, 171, 174<br />(done with load adapter)<br /><br />So unless I'm missing something, this seems to be in line with the book except the low ohm on the charge coil between A and B. But I don't think that would cause the double fire.

 

[clanton]

Re: 94 115 Evinrude still crossfiring ign.

I would do the output test again with engine running. The pack output running is 230 volts. The charge coil voltage will go up some. I had one that made 550 volts on the charge coil engine running, within specs at cranking rpms. It would cook the pack just after the engine started. Did you try the timing pickup with tape or airgap in the pickup? Back to defective pack. Did you check the black/yellow wire at the pack for DC voltage engine off, key on, and key off.

 

[drackley]

Re: 94 115 Evinrude still crossfiring ign.

Todays festivities consisted of an 85 degree sunny Sunday with OTHER boat owners on the river, and me doing more voltmeter test on this thing. Pout mode off. Todays coil tests show the following.<br /><br />Ohm tests between primary and groung and primary and secondary showed all coils normal. However. Running (if you could call it that test of the primary reveled 193, 196, 191, 189 volts. The manual says go on to the charge coil tests. Again for the umpteenth time all normal. Checking black and yellow wire from pack and to igition switch shows no voltage key on or off. As for the timing light, there is a good 1/8 air gap on it. Do these solid core wires cause problems with inductive lights?