carb not getting gas???

[mcarlito]

Re: carb not getting gas???

Rwise, I poured a little gas into the carb. and I also tried putting some into the cylinders. No spit no pop. Points are at .020 and plugs, which are new, at .030.<br />I could be experiencing multi problems here. 1- I'm trying to get the fuel pump to pump gas with respectable pressure, right now it trickles out and 2- once the gas gets into the cyclinder, trying to get it to fire.<br />I pulled the plugs one by one to check for spark.<br />I have spark but I would say not a strong spark, could this be condencers??<br />Thanks for your input.

 

[rwise]

Re: carb not getting gas???

Have you cleaned the points? Was the .020 at there widest open point? Do the coils have cracks in them? dirty points and or bad condenser/s could weaken the spark, most here will say if the coil/s have cracks in them they should be replaced. What about the kill switchs and wireing for them? I would disconect any kill switches at the engine and recheck spark just to rule them and the wireing out.

 

[fireman57]

Re: carb not getting gas???

Your spark has to be strong and bright blue.

 

[mcarlito]

Re: carb not getting gas???

Rwise, I have cleaned the points, will recheck the gap again. Not sure if coil has cracks. Will check. Since the motor has been siting for two years, should I just replace the points, condensor, coil and spark plug wires???<br />thanks for your input<br />Mike and son Zach

 

[Crappie_Fan]

Re: carb not getting gas???

To avoid spending lots of money by just replacing things, I would setup a spark test board, I have read where people recommend this to others on this forum for checking for a good spark. Nail one nail into a board and the one more nail for each cylinder you have around the center nail. Bend the outer nail so that they have a 90 degree bend in them this will allow you to adjust the gap from the center nail to the bent nail. Not sure what the exact distance your spark should jump, but I would say at least 7/16 gap and be bright blue. The Center nail will go to ground and the surrounding nails will go to each coil boot. I would be kinda like looking at dice with one showing 5 dots, this would be the configuration for a 4 cyl. I know I may not have explainded this very well, but maybe you can get a idea and go from there.<br /><br />Good Luck

 

[Brew2]

Re: carb not getting gas???

Or...you could go buy a spark tester for $5 at any auto parts store.

 

[rwise]

Re: carb not getting gas???

MIke the points and condenser should be fairly cheap as parts go. Most of the time you can clean the points and run fine. If they have heavy pitting in them, then change them and the condenser. the condenser can set and go bad or just go bad running. did you disconnect the kill circut from the points?

 

[mcarlito]

Re: carb not getting gas???

Dear everyone,<br />My son Zach and I are not having fun anymore. Today I replaced the points, condenser, pulled the kill switch wire, and as my son was turning over the engine, I was spraying gas into the carb. Nothing happened, not a burp or pop or anything!!!!! I ran a test on the carb so the float is working fine. I adjusted the carb low speed jet adjustments again. I checked the spark after the points, condenser were installed and I think I have good spark!? Definitly a better spark then before.Can anyone help on this one, we are stubbed big time.<br />Any help on what to do next would be greatly appreciated. and thanks for all the people who have put their advise into this listing. We are still learning a lot and thats a good thing.<br />Mike and son Zach

 

[Basscat 1]

Re: carb not getting gas???

Hi. <br />With out reading your entire thread, a couple of things come to mind.<br /> <br />1. Did you check the compression by any chance? If so, what were the readings?<br /><br />2. How fast is the engine cranking? It needs turn over fast enough to start; not slowly.<br /><br />3. Try removing the spark plugs and spray a little pre-mix into each cylinder, and then re-install the plugs and turn it over.<br /><br />4. Choke. Even just spraying fuel into the cylinders and carb is not enough. The engine must be fully choked during the start cycle to help draw in the fuel and air.<br /><br />5. Finally. You say you have spark, but when is it sparking? If after doing all this, you may want to verify the time of the spark the old fashioned way. Remove one of the plugs and connect a spark tester, or just hold it near the engine block. Place your thumb over the cylinder hole and have somebody turn over the engine. It should spark just before the piston reaches top dead center as felt by the burst of air pushing on your thumb. Be sure to keep the spark away from the open cylider hole just for safety.<br /><br />You may have done all of this, but I am just making some suggestions. Remember, the engine needs air + fuel + compression + spark to run.<br />Here is link that may help. web page <br />Good luck and keep us posted. Dont give up.

 

[jfm1]

Re: carb not getting gas???

recheck your compression use a different gauge with all you done I don;t know why it won;t fire-up make sure you don;t have any thing shorting out under the flywheel if you sprayed fuel into the spark plugs and have spark it should try to fire also make sure you have the right plugs for that motor

 

[mcarlito]

Re: carb not getting gas???

to basscat 1 and jim matthews,<br />Thanks for the input, here is my response. I did a compression test last fall. I don't recall the readings off hand but when I had post them on this site, I received a good response to continue working on the engine. <br />quote: How fast is the engine cranking?<br />Well the battery was running low to the point where it wasn't turning over. I'm charging the battery as we speak.<br />I've tried to put gas into the cyclinder and turn it over but nothing!?<br />I was thinking about the timing because there is not much left to check. I don't have a timing light so I will certainly try basscats method.<br />quote: have any thing shorting out under the flywheel?<br />I have to check this out, but I don't think so.<br /><br />Questions, After trying to start this engine in a tub of water, my son and I noticed that there is a gas oil mixture in the tank. Should we be concerned??<br /><br />And finially I want to tell you that last fall I took this boat out and got the engine started and drove off into the lake. As I got further out from the docks I tried to take it to WOT and the engine would stay at a fast idel about 600-700 rpms. We were on the water for about 45 minutes and all of a sudden the moter did three coughs each slowing in rpms and then it stalled. That was the last time I had it running. I got towed by some really great people and here I am. I hope this helps as well.

 

[jfm1]

Re: carb not getting gas???

thats just unburnt fuel even a running motor will leave some behind not too sure about this but you may have spark while the plugs are pulled for a test but with plugs installed may not have a good spark do to weak coils ? just a thought

 

[mcarlito]

Re: carb not getting gas???

Thank you for telling me about the unburnt fuel. Is there a link here that will tell me how to check for a week coil?? <br /><br />thanks<br />Mike and son Zach still hanging in there!!!!

 

[Basscat 1]

Re: carb not getting gas???

You say the last time you had the motor running was last fall. Did you do the compression test before or after the engine stalled on the lake?<br />Compression is very important for all engines, but more so for 2-cycle and diesels.<br />Check it again and post the readings.<br /><br />As far as checking for a weak coil, I dont know a method other than swapping it with a known good one. Maybe somebody else has a way checking?

 

[mcarlito]

Re: carb not getting gas???

basscat 1,<br />I did a compression test before the engine stalled on the lake. I'll check it again and post.<br />I just spoke to my marine supplier and he told me to bring in the coil and he'll test it for me. He has one coil left for my engine and it's $70.00. WOW that will hurt but if it is the problem (which I still don't that for sure) then it's worth it. I was just reading some other posts and people were mentioning topics like checking the stator aleignment?? and gap. and checking coil gab. These readings are offering other ways to look at this engine but I'm not sure I should be going there. Any advise??<br />Thanks to all for your input. At least I can try something else instead of just looking at the engine.

 

[Crappie_Fan]

Re: carb not getting gas???

You never anwsered how far the spark would jump. If your coils will jump a 7/16" gap to ground with a bright blue sprark, then there is probably no need to change the coils. Check and see before you pay 70.00 on something you may not need. Take plugs out of engine and place a screw driver in boot and hold screwdriver and about a 1/4" from the engine block, then slowley pull it away and see how far it gets with good blue spark.

 

[mcarlito]

Re: carb not getting gas???

Thanks Crappie_Fan,<br />Will go home and try it this afternoon. You are suggesting that I take plugs out when I run this test. Is there a difference if I leave the plugs in? Should I or could I remove the magnito belt and just turn the magnito pully by hand?? OR should I crank the engine over as though I'm trying to start it with the plugs removed?<br />thanks for the help<br />Mike and son Zach

 

[Crappie_Fan]

Re: carb not getting gas???

Yes remove plugs so the engine will turn at a fast rate and make sure your battery is fresh too. I'm thinking your not getting a good spark otherwise it would pop, kick, backfire or something. Now that dont mean its coils, it could be anything that shorts out the starting circuit.<br />Also you might spray a little lubricant into the cylinders so there not turning over dry. But try the spark test and see what you get.<br /><br />Good Luck

 

[Basscat 1]

Re: carb not getting gas???

If you decide you need a coil, I am sure you can find them cheaper on the internet. I bought mine that way from a place in Florida, but I dont remember the name.<br />Check the compression first.

 

[mcarlito]

Re: carb not getting gas???

I have the magnito apart. before I did this I tried a few tests. One I did a compression test. Cyl 1=80psi, cyl 2=80psi, cyl 3=90psi, cyl 4=80psi. This is what I got last summer. <br />Then I tried to get spark by removing all the spark plugs and putting a screwdriver into just one plug cap. I turned over the engine with a fresh battery just charged, but I didn't even get a spark!!!!???? Then I took off the magnito belt and tried to spin the top clockwise of the magnito and still nothing. So as I said I removed the magnito from the engine and removed the cap that exposes the magnet. The magnets are very rusty as well as the contacts for the magnets. I also removed the coil and notice a small crack on one side. The size is approximately 1/4"long. So now what do I do?? And thank you