70 HP Evinrude

[Newell]

Need your help Guys, Just bought a 1988 Evinrude 70hp, E70TLCCA with less than 10 hours on it (man passed away soon after he got the motor, gave boat, motor and trailer to a friend and it has been stored in the barn for 2 years).<br />I can’t get it to start. Starter turns it OK but no run. I have removed and cleaned the fuel filter, plugs look OK. I know nothing about motors (I do computers) so bear with me.<br />There are no outboard service places in my area so I will have to try and troubleshoot myself. Logic tells me if the starter is working, gas and spark present, something should happen.<br /> My question is, what simple tests can I perform to identify the problem?<br /><br />Newell Welch<br />Harrisonburg, Va.

 

[petryshyn]

Re: 70 HP Evinrude

Bear with me as I know nothing of computers!!(and very little else for that matter!....LOL)<br /><br />-Fresh gas??<br />-Supply water to engine (ear muffs on leg, or put in water)<br />- Squeeze primer ball until it gets hard(probably a good idea to tap on carb body with screw driver handle while squeezing ball)<br />- while cranking, spray WD-40 into carb air inlets(approx. 5 sec. per carb)<br />- If this don't get you running, carbs could be gummed up from sitting. Try this first.

 

[Newell]

Re: 70 HP Evinrude

Fresh gas? Hmmmmm. Will get some just to be sure. Water applied via earmuffs. Can't wait to try your suggestions.<br />If carbs gummed, do you think a non-motor person could ungumm them?<br /><br />Newell

 

[petryshyn]

Re: 70 HP Evinrude

The ear muffs I'm refering to are an adapter that allows you to run engine out of water.(see your local napa or marine store) If you run engine without water supply, you'll be askin' for alot of help! Don't even crank it if its not in water!!!(especially after storage)<br />- as for you doing carbs????? that all depends on you. A badly overhauled carb can be a source of fire. Kind of a scarey thing a mile away from shore!!<br />- probably best to trade labour with a wrench in your area.(everyone always has computer issues..LOL)

 

[Newell]

Re: 70 HP Evinrude

Yes, I have earmuffs in place.<br />Trading expertise might be the answer.<br /><br />Newell

 

[JB]

Re: 70 HP Evinrude

Ahoy, Gents. There is more that you can do, Newell.<br /><br />I think Schematic got in a hurry explaining how to do the WD-40 test and skipped to the next step without finishing the first.<br /><br />Given: fresh fuel, either mixed at 50:1 with TC-W3 rated outboard oil or with said oil in the oil tank. . . . nah, first time you better premix it. That VRO (variable ratio oiler) pump could be fritzed.<br /><br />Pump the bulb, as Schematic explained. Then turn her over with the starter. Give the carbs the WD-40 spray for a few seconds with the throttles open. If it fires and tries to start, then your problem is fuel delivery. (The "if it fires" part is what Schematic forgot to type in). <br /><br />It seems unlikely to me that all three carbs would refuse to provide fuel, but it is possible if they were left full of mixed fuel 2 years ago.<br /><br />If the WD-40 test doesn't get results of any kind, you probably are without spark. Using rubber gloves (Playtex work just fine) remove one spark plug wire and turn her over. Hold the tip about 1/2" away from the block. It should arc at least that 1/2".<br /><br />Let us know what you learn from the above and we will take it from there.<br /><br />Red sky at night. . .<br />JB

 

[Newell]

Re: 70 HP Evinrude

JB, thanks. Will try this weekend and post results.I wondered what the VRO on the side of the motor stood for, now I know.<br />Are you suggesting 50:1 TC-W3 oil tank mixed?<br />If so, should I do anything to the VRO pump?<br />If the problem is fuel delivery, is there any course of action I could try short of having a mechanic rebuild the carbs?<br /><br />Newell

 

[JB]

Re: 70 HP Evinrude

Howdy, Newell. Having mixed gas/oil in your fuel tank will not harm your engine if the VRO oil pump is working, but not having oil in the gas if the VRO pump is not working could be fatal. Let's leave the operation of the VRO pump out of the question while we get her running.<br /><br />If your problem turns out to be fuel delivery you can fix it with a little coaching and save a lotta bux or you can take it to an outboard wrench to do it. . . your call. <br /><br />Standing by. . .<br />JB

 

[Newell]

Re: 70 HP Evinrude

JB,here's my plan, fresh gas with 50:1 TC-W3 oil, disconnect the VRO and plug the intake line. Spray WD40 into carbs while starting.<br />OK?<br />Next dumb question: there is a button on the left side of the controls just aft of the shift lever,is it to prevent starting when in gear?<br />Also, there is a lever on top of the controls<br />just above the ignition key, is it a choke/fast idle control.<br />Wish I had an owners manual.<br /><br />Newell

 

[evin300]

Re: 70 HP Evinrude

I probably would not disconnect the VRO, as you will have to purge the system according to the manual to use it again. It wont hurt to run this at 25:1, or double normal, untill you confirm operation of the pump. (just more smoke)<br /><br />The black button (kill switch) must have the safety laniard plugged into it, or no sparky.<br /><br />The choke is in the key switch and it is activated by pushing in on the key.<br /><br />The lever (fast idle control) is to be raised for cold start purposes, make sure shift is in nuetural and raise lever half way as the initial setting.<br /><br />Do not over-rev the motor, stay below 2,500 RPM at the maxium without a load on the prop.<br /><br />Do not run more than 5-10 mintues on the muffs. (can't remember why but there is a good reason)<br /><br />Yes, you need a manual, preferably the real deal from OMC, (this can be difficult)<br /><br />Follow previous advice from other posters and you should be fine. Good Luck

 

[JB]

Re: 70 HP Evinrude

YES. Evin300 covered everything Schematic and I left out. Go for it, Newell.<br /><br />Red sky at night. . .<br />JB

 

[Newell]

Re: 70 HP Evinrude

JB, Schemo,Evin,<br />Update: limited success, she fired! Here's what I did, connected my charger to the (new) battery and it was charging. Sprayed "Snap" carb cleaner in the carbs and she fired, not long but fired, so I don't know which did the trick, maybe both.<br />Next I removed a 1/4" screw just below the 2 upper carbs and drained them (is this the resevoir?) Then I blew through this opening (tasted bad), no restrictions. Then I sprayed Snap in the opening and observed it went into the throat of the carbs. The motor then fires but not for long, seems fuel starved. Need a right angle screwdriver to do the bottom resevoir yet.My Shenandoah Valley logic tells me I have a fuel delivery problem, do you agree?<br />JB, what is your Email address?<br />Newell

 

[JB]

Re: 70 HP Evinrude

Ahoy, Newell. You can get my Email address from my profile, but I prefer to keep correspondence on this subject on the forum, so others can observe and learn from our errors... or successes.<br /><br />Yes, you have a fuel delivery problem. Please see the thread Schematic posted on the subject of ignition testing. . . "If you are an expert, don't read this" or close to that. It is good advice.<br /><br />Your next step is to dismantle and clean your carbs. Best thing to do is get a manual. I like Clymers, but others like Seloc. Take your choice if you can't get the OMC service manual for your 'Rude (first choice). You will have to pay 25 to 35 bux for the manual, but it is a very good investment.<br /><br />When you are ready, post.<br /><br />Red sky at night. . .<br />JB

 

[Newell]

Re: 70 HP Evinrude

JB,looked at your profile but do not see Email address.Didn't know how the group felt about message length or photos, will find out now.<br />a)I compliment you on your reply to "My Wife".2 years ago my wife was diagnosed with colon cancer.After surgery,Kemo and radiation she is "clean" and on a 4 year checkup schedule.During her illness the thought of her not being here caused me extreme discomfort."you never miss the water till the well runs dry".<br />b)Agree with Schemo's high voltage explanation. I repair computer monitors at the component level and am in close proximity to 30,000 volts every day, that's 30 with 3 zeros behind it.It isn't lethal, just makes you think it is.<br />c)I will order the Clymer manual.<br />d)Been doing electronics for some 40 years and have to deal with something that can't be seen (electron flow), can only see the effect.At this time I need theory of operation on carbs.If there is gas in the resevoir how does it get into the cylinders?<br />e)New clues,motor starts and runs for about 2 seconds,raising the idle lever past 1/2 causes it to race wide open and I shut her down.<br />f)This might be significant, I squeeze the gas bulb to fill the fuel filter and after several starts the gas level in the filter is only about 1/3.Pump or tank?<br />g)Have some photos of things I can't identify and will send them on next post.<br />h) Finally I want to thank all of you for the info and encouragement, I was getting pretty discouraged.<br />Newell

 

[evin300]

Re: 70 HP Evinrude

bump

 

[nickster]

Re: 70 HP Evinrude

Newell after getting that motor fired up you have to keep choking it till it worms up. If you are not choking it till it warms up it will not run.<br />Good luck!<br />Nick

 

[Newell]

Re: 70 HP Evinrude

Nick, hadn't considered keeping the choke engaged. Is this common to my motor or Evinrude in general?<br />Will try.<br /><br />Newell

 

[nickster]

Re: 70 HP Evinrude

Newell this is common in all outboards except fuel injection

 

[evin300]

Re: 70 HP Evinrude

bump!

 

[clanton]

Re: 70 HP Evinrude

You have to clean the carbuators, install kits, insure all passages are open, I use a strand of copper wire. After you get it running, I will provide you with part numbers for up dated temp sensor, waterpump, and thermostat.