Search results

Outboardignitiondotcom has troubleshoot chart with values of resistance and voltage output for the stator.

Sorry, how have you stated spark at all four cylinders.

Have you checked the compression by your self or it is information from pre owner? Have you checked the timing by your self ? How have you stated you have spark at all three cylinders? Do as topgun3690 and racerone says. Clean the carbs and put a clear inline filter between the fuel pump and the...

CDI Electronics and Sierra have those replacement coils. Should be many dealers or web shops that have them. Master Tech Marine is one on the web.

Change both coils, not only one of them!!! They are cheap and the one you do not change will fail soon. BTW. When you check with your VOM for resistance, the VOM put out the battery voltage the VOM is supplied with. Maybe 4.5, 6 or 9 Volt depending on brand.

My opinion about what have gone wrong is!! If it was rebored, is it rebored to right spec.? Has he checked the ring gap? What mixture have you run at the break in period? How has the break in been done? Speed, load, RPM?

Do you have plug connectors to the CDI boxes or a terminal strip? If plug connectors check the connectors for corrosion or oxide at the pins and sleeves. If terminal stripe check the lugs for bad connection, especially under the heat shrink tubes. That was a common issue for these ignition systems.

Very very common at old OMC OB with magneto ignition. Sierra and CDI Electronics has replacement for them.

jerryjerry, I did not look at the movie. My mistake.

Good news. yes I agree with jerryjerry. It is almost the best way to go with starters to restore them. They with last forever with good maintenance. Cleaning, change springs and brushes and sometimes change the bushings/bearings and they last forever.

That is the culprit or one of it. Regarding the prop what size do you have right now? 4000 RPM at WOT is about 800-1200 RPM low Going down 1 in in pitch would rise the RPM about 200.

You test them separate and do it with them disconnected and connected to the terminal block or connector plugs. Checking with them connected give you answer if they put out right voltage when under load (CDI box).

Do as Flyingscott suggest, pull the LU and check water tube and impeller housing. I am not really familier with the 70Hp, but there must be a pee hole or a idle relief hole at the back of the leg. Does water exit from one of those?

There might be couple of brands out there but they are simply the same. A DVA adapter contains as I said before a capacitor a diod and a resistor. The purpose of it is to rectifie the AC voltage to DC voltage and store it in a capacitor. Then you are able to read the peak voltage from the stator...

If you loose sparkat all five cylinders I would suspect the stator. Outboardignitiondotcom has the troubleshoot chart.

Just check the resistance (Ohm) for the trigger and stator are not 100% they are good. The DVA voltage output from the stator and the trigger give you the answer if they are good or bad.

It may not be able to broke but why take a chance. To ground the other cylinder is an easy fix.

If you have two of those spark tester then it is okey (BTW there are multipel cylinder spark tester in the market), BUT if you have only one you have to ground the other cylinder (two cylinder engine). There are two alternative, have the spark plug connected to the HT wire boot and ground out...

When checking spark on a CDI ignition system with that kind of tester you have to ground out the cylinders that you do not test at the moment. If not, you can damage the CDI box as it have no way to dump the voltage in the capacitors when it have to.

I think Franz Marine will ship to Canada, I live in Sweden Europe and he ship to me. Looking at your prop gap to gear case and it looks like it is not quite right BUT it do not have any effect at the OB performance as these Chryslers do not have any exhaust through the prop. It is just cosmetic.