| Author | Message | ||
     Thunderhead |
well the 99 s-3 is all together now. new motor.i went to light it for the first time and it doesnt start. i get a few thumps out the muffler while i am cranking it, but nothing when i let off the starter. no trouble codes. all wires are hooked up. i have spark at both plugs and fuel in the cylinders. i just put $5000 in a $2000 bike(i must be an idiot).any ideas before i burn it in the driveway, and get a honda? | ||
| Sportyeric |
I'm about to push the "go" button on my rebuild after five years working on it. Or not working on it. And that's what I'm afraid will happen! Old gas? Timing out? Cams not in right? Coil wires right polarity? | ||
| Thunderhead |
the gas is from the jeep, and it runs.the machine shop did the engine, so i guess its in time and cams are correct.not sure about polarity on wire, but they spark. | ||
| Pkforbes87 |
the short plug wire goes to the front head, and the front spot on the coil. Sorry if that's common sense to you, but I've nearly put the wires on backwards before  just a wild hunch.. but pull the air temp sensor plug, then try starting it. And if you're an idiot then join the club. I'm nearing the same price on my project and all I've got to show for it at this point is a big pile of shiny parts next to an empty frame. | ||
| Thunderhead |
so your saying to disconnect the air temp sensor , leave it unhooked and try to start? | ||
| Pkforbes87 |
Yep. I've had my IAT sensor give inaccurate readings before while still not actually faulting. The ECM sees the incorrect reading from the IAT and gets the air/fuel all wrong. You can start the bike without the IAT plugged in, just ignore the check engine light. EDIT: I just noticed that your first post makes it sound like a shop built the motor, then you installed it? You need to reset the TPS if you haven't already. With it being a new motor reset AFV to 100 as well. (Message edited by pkforbes87 on February 20, 2009) | ||
| Thunderhead |
new motor that i put in and new ecm also. my understanding is that it should run, but run like crap | ||
| Preybird1 |
I to am at almost 7k. It will probably be something small, Probably something you missed | ||
| Kalali |
I'm probably stating the obvious but if you have ECMSPY you can run diagnostics and double check the coils, injectors, fuel pump, etc. Also if the TPS is really off, which could easily happen with a new motor and ECM, the bike will not start at all. In cases like this ECMSPY could be your best friend. Good luck. | ||
| Dfbutler |
Having just been there done that: 1. had plug wires backward 2. Exhaust temp was not plugged in tight I had already set TPS with VDST. | ||
| Thunderhead |
it sounds like i need to get my but to harley davidson for a tps and afv reset.i hate that place and would rather be hit in the face.the ecm spy is the cord that al sells? that is all i need just a cable? | ||
| Dfbutler |
Thunderhead, It only takes 3 or 4 trips to the dealer for a TPS reset to pay for the VDST software and you get other functionality. You can get it from American Sport Bike. Give Al a call. | ||
| Easy_rider |
T-head, I've been stalling on buying an ecmspy. I can either buy/loan it to you or if you order one I'll buy it when you're done. DfButler: What's the advantage of VDST over ecmspy? | ||
| Thunderhead |
found a guy with a scanalizer. he hooked me up with the tps reset and afv.he also did a few system checks. he couldnt find anything wrong. it still doesnt run. i did get to hear it for a couple seconds though. he said he might come back over tomorrow if i had sunday beer! | ||
| Natexlh1000 |
Will it run off a shot of ether? | ||
| Dfbutler |
I already have VDST. It's paid for itself. ECM Spy is free, but you can really screw things up. while VDST makes you work to do harm. | ||
| Preybird1 |
How is your compression? After i did my exhaust valve on the front head my bike wouldn't start. It turned out when the cylinder was cleaned up and i wiped it with a rag this removed all the oil film on the cylinder wall and i had no compression so i put a cap full of oil into each cylinder through the spark holes and it restored the compression and it started up! Also if it gets started to much and is getting gas and wont start you can wash the cylinders easily. I have washed them accidentally before. I may be wrong but this worked for me, Just a thought. | ||
| Thunderhead |
the compression reads 225# at each cylinder. i am going to wait and see if i get a phone call from the guy with the scanalizer and see what we come up with tomorrow(well in a couple of hours anyway). after all i do have some sunday beers!wish me luck.  | ||
| 5liter |
Fuel pressure regulator? | ||
| Thunderhead |
it checks out at 50#. the fuel pump comes on at each stroke. | ||
| Yo_barry |
Couldn't get my Sportster to start after a top end rebuild. Found that I hadn't fit the intake manifold correctly so that fresh outside air was leaking directly into the heads. Fixed that and it started first crank! | ||
| Thunderhead |
how did you check for that? | ||
| Yo_barry |
It acted like it was real lean, fired once but needed full choke and lot's of throttle to keep running. I suspected an air leak and this was the most logical spot. Pulled the carb, gasket between carb and manifold looked to be OK. Put a finger into the manifold and could feel a large 'step' where the manifold and head come together indicating a misalignment. This is the same mounting on the Buell engine. You just have a throttle body instead of a carb. On CA Buells, there is a vacuum fitting on the bottom of the throttle body that needs to be plugged if you no longer have the carbon vapor canister. Don't think that would keep it from starting however. | ||
| Sportyeric |
Anybody near you got a carb you could throw on? Wouldn't need to hook up the cables. Jerry can to feed the gas. Might help isolate the problem. Not to rub your nose in it, but my new build started right up! Carburators, man. That's what life is all about. (from Phantom of the Paradise.) Oh. Then it leaked oil from the oil-pump area, which is a PITA to get at on a Sportster. Maybe that oilpump gasket on my dresser wasn't an extra. Does a fuelie have a VOES outlet on the throttle body that might not have been connected? (Message edited by Sportyeric on February 24, 2009) | ||
| Firemanjim |
It sounds like lack of fuel with a dose of TP thrown in. Al Lighton has a great write up of correct way to set TP and alot of dealers don't do it correctly. We had an X-1 recently that had sat for awhile while getting rebuilt and both injectors were clogged. When you pull a plug after trying to start is it wet at all? And have you tried starting fluid? And have seen 3-4 bikes recently with that darn vacuum fitting unplugged from when they took off cannister--is it any wonder they are not running right?? | ||
| 5liter |
My canister plug was missing and it never bothered the bike. I found it missing when I went to the racing air filter. I plugged it and it didn't make a difference. | ||
| Preybird1 |
I have no cap either and it doesn't bother the bike. The fuel injectors will pop apart and there is a 10 micron screen on the inside if the injectors are plugged you can check them by taking them apart. | ||
| Thunderhead |
the bike is fuel injected. no voes.the injectors work and the tps has been set.like i said before a guy came over with his scanalizer and he did several things. the reason he has a scanalizer is because of the company he works for(im sure you can guess which one). the plugs seem to get black after just a little bit of cranking, i have heard it fire and run for a few seconds. he will come back over this weekend and do some more trouble shooting. | ||
| Oldog |
the plugs seem to get black after just a little bit of cranking Too much fuel} | ||
| Lovedabueller |
TURN THE KEY! LOL..... I COULDNT RESIST ANY LONGER |
