I have a S110P five speed, it revs up in neutral. When you take off in first it runs good, 2nd it runs good, 3rd it does pretty good but will have to downshift if very much of a hill, 4th will barely pull itself and steady decrease speed, 5th you can just put it in but it might as well not even be there. Just bought it and wanting to see what might be the problem. Have taken the exhaust loose to make sure it was not clogged, air and fuel have also been checked. I thought about timing advance not working and going to check it. Can someone help me with this. thanks
Just off the top of my flat head Bad fuel ? Clogged fuel filter ? Moisture in the fuel ? Just a place to start
Compression check? needs to be 170psi+. 165 min. Is it smoking? Carb. kit?I believe if timing was off you would feel it fall off in 1st also. I'd Sea Foam the carb. Cheap fix if it works. I recently had a s83p that came in the shop. Started fine, idles fine, step on the gas in neutral fine. Put it in 1st give it the gas and it falls on its face. 2nd, 3rd,4th was the same. Pulled fuel line off of tank and sucked about a 1 cup of sea foam into the carb. shut off engine for about 30 min. let the magic happen and varooooooom.
If the carb cleaning doesn't work(follow Trax's advice with the seafoam,and you should be good...following Trax's advice is always good, he knows his mini trucks) and the compression is good .I would check the valve clearances (tight valves may cause slightly lower compression as well,it will also burn out valves if not fixed) loose valves (lots of valve ticking when warm ) can cause a loss of power that may not be noticed as much in lower gears.
Have you checked to see if you have any fluids in the diffs. tranny and transfer case...brakes sticking ?
I know you mentioned taking the exhaust off and checking it..did you take the catalytic converter off and make sure you can see through it ...your symptoms are almost dead on for a clogged catalytic converter
Maybe the high speed jet clogged, floats out of wack (unlikely) Since day one that you have had it, its done this? How many kms or miles?
It has almost 26 KM on it and it has done it since day one. I am thinking it might be in the carb but it cranks and idles fine but it uses a lot of fuel. Thanks for the help. If you can think of something else let me know, in the mean time I will be looking over the carb.
Pull your plugs and see if they are wet and jet black. If so you might have a float problem. My guess after what you just said indicates a carb. problem. Might be getting to much fuel on the upper end ? I'd also go ahead and check compression on all three cyls. for grins. At least you will know. Chad Hite rebuilds these carbs. If you need him he can be reached @ 270-331-1414 after 4:30pm.
On second thought the plugs are what they are. The only way to really tell anything through the plugs would be with a new set. Yea, with a new set you would run it hard about about a mile then look at them. Just pull the old ones and see what they look like. They should be a nice tan color. If they are black you are running rich. Which would lean towards the problem you are having considering the carb.. You can pull up a good plug chart on the web.
Took the carburetor off of my 97 daihatsu hijet and cleaned it up and put it back on still the same problem. Changed the spark plugs also. Does anyone have any suggestions. It idles good but just doesn't want to pull 4th or 5th gear and will wind up in 3rd and that is about 35 miles per hour. Can someone give me anymore suggestions what to do. I will appreciate it greatly.
when you removed the carb did you open the float bowl and check the main fuel jet ? let's look at this another way as well..bear with me ...in lower gears will it rev up to redline (if you don't have a tach hooked up I'm just wondering if it revs good and high) if so then I can't see how the main jet would be an issue,...I'm thinking you have a sticking brake caliper or wheel cylinder..as you speed up it is heating and expanding to the point that higher gears cannot overpower them..go for a drive and then place your hand near each wheel and see if one is significantly hotter..if you have a laser temperature gun then that will work perfectly to check the brake temps
Just to point it out there is another thread going seems to be the same problem different person, different truck, but the problem seems the same http://www.minitrucktalk.com/showthread.php?p=55274#post55274 Oh and Fupabox made note of something in this thread about a possible fuel shutoff solenoid and a possible low speed solenoid You never know, kind of makes sense http://www.minitrucktalk.com/showthread.php?t=8166 fixing it is the easy part the hard part is figuring out what to fix
sounds like we have the same problem...and now that he mentioned it....i get really poor gas milage also.... lets all keep intouch and see if we can't figure something out.....
i am almost positive that it isn't yhe brakes because i should smell them but i will check this afternoon.
Still the same, just like I thought no brake problem. I am about at the end of the line of the things that I am aware of and can't find any mechanic that works on these things.
WOW..... I cant believe how similiar our problems are. I had to leave on a business trip but when i get back in town I have a mechanic friend who is going to take a look. I tried to take it to a few places....and nobody wants to work on my truck...... I'm not giving up yet.... I'm not much of a mechanic.......but i think the problem is with the exhaust.....have you tried to take off the muffler and CAT and test drive it? I'll definatly keep you posted but probably wont have anything to add until saturday..... if you discover anything in the meantime please let me know...... i know its a stupid question......but could it be something as simple as an old battery? Are you in the united states? what state?
I am super interested in the fuel shutoff solenoid theory myself. Seeing as there seems to be 3 of you with very similar problems. Did a search for it and found a few threads. Some of the stuff in there sounds SIMILAR http://www.minitrucktalk.com/search.php?searchid=271070 I am not at all familiar with these little beasts yet, but if you have the choke with the wax in it - ( i wonder if mine is the same ) that is like the old dodge K cars pain in the butt Just another avenue to look into I cant remember which thread it was, but I did read that the fuel pump WAS the issue. I remember years ago, with a 78 civic, and it had similar problems. Would idle, but nothing much more. Was able to limp it to a garage. Ended up being the fuel pump. It had just not totally failed yet. Found a great simplified explanation here http://en.wikipedia.org/wiki/Fuel_pump I like this forum it makes me think