Zongshen RX3 : Unexpected Dead Engine in a deep forest tour

[vickytulla]

thanks man, yes I am on it.. spent a weekend trouble shooting, one of a car EFI technician helped out a lot, I also met a Honda/Yamaha Super bikes service center who do service for sports bikes they were least bothered to help out ..

any ways this car mechanic new and I gave suggestions which i read here by all you people.. and he totally agreed...

1 - [DONE] we replaced the relay any ways just to remove any doubts... (right now both relays do the "tick" "Click" on doing switch on/off ignition..

2 - then we dipped fuel pump into a bowl of petrol and wired it with battery it did not ran nor it made any BZZZ sound.. he shaked it blow air into its passages... then he said it seems like this thing is tucked.. I said how hw said it tries to move but then stop..

He had a carb cleaner he dissected the actuall motor out of the feul pump assemble and blew carb cleaner in it.. the again checked this time it produced "click" sound but did not moved or bzzzzzed...

then he again banged it against hand just like he was trying to get it moving some how.. this time when he dipped it in fuel and tested it spewed out fuel and started to rattle and bz..zzzzz....

on several further tests it was noticed that some times it will get stucked again and some times it will work.. when it gets stcuked if banged or shaked it will start working..

so final diagnoses is that feul pump has gone bad... any one nows if this pump is changeable/swap able from some other bike or car ? or do I have to get exactly the same ?

any guidance will be really really appreciated...

Originally Posted by Jay In Milpitas

To begin, You are now the RX3 technician in Pakistan. Hold head up high and start, one step at a time.
Good luck.

[vickytulla]

If you notice here the voltmeter shows 11.96volts for roughly 3 seconds when ignition is on/off where as If I direct check battery then battery shows 12.90volts.. can that be an issue ?

[vickytulla]

Pump arrived, feul is now pumped very time . there is spark in plug... but Bike wont start

help me guys... the Batter I recharged and attached again.. the self rotates bit slower then it used to be before... but still rotates.. also I removed plug and checked if spark si comming spark is also coomming then I removed air filter so I can removed doubts that if air is not fed properly.. but nothing helped untill the batter drained again due to lots of self starts...

now I am clueless what should I do..

[rjmorel]

Charge up the battery fully before trying to start. I think a low battery is the problem now. Your "kill" switch isn't on is it? rj

[vickytulla]

thank you @rjmorel for guiding... Yes I did charged the batter two times and then got it all drained while trying to start it..

the kill witch if on "off" self do not work.. it only works when kill switch is "on" and there is a buzz from fuel pump...

today going to auto market for buying new battery, another thing which is found out is that on tour I crossed some really deep streams... and last day the mechanic who is assisting me opened a small opening at the bottom of filter it drained like good 200ml of mudd water.. this put him on high doubt and then he opened the filter completely cleaned it blow it dry... cleaned the area of throttle body was was accessible with cotton cloth in hand but it was already very late night and we drained the battery already so we called it a day...

Originally Posted by rjmorel

Charge up the battery fully before trying to start. I think a low battery is the problem now. Your "kill" switch isn't on is it? rj

[artur94]

-Replace / check fuel filter if is not block
- check the full injector if is not block
- Test the pressure in the cylinder
- check exhous if is not blocked

[pete]

Disconnect the pump from the injector...
there should fuel coming out the hose when
you turn the key on then it should stop after a second or so
then push the start button while the motor is cranking over
again fuel shoud come out of the hose to the injector...

if this all works as intended... remove the injector reconnect it
to the hose and crank the motor over on the start button there
should be a mist of fuel comeing out of the injector.. (hold a peice of paper in front of it see if it gets wet)
Make sure the power wires are pluged into the injector while doing this test
the injector also may need to be earthed to the motor...

If all this works fine & there is spark at the plug the next place to look
would be the crank shaft postion sencer... it is what tells the injector
when to fire a shot of fuel.. if it is not right it could be sending the shot of
fuel at the wrong time...

[vickytulla]

Originally Posted by artur94

-Replace / check fuel filter if is not block
- check the full injector if is not block
- Test the pressure in the cylinder
- check exhous if is not blocked

1 - Feul Filter is letting the feul pass and it was clean
2 - How can I check injector by removing it and seeing it if it sprays ?
3 - Pressure was fine I checked it as a the first thing
4 - exhust is not choked as well its fine..

I just got exhusted that day .. will debug further on comming weekend.. Damn thins EFI thing is complicated, I never worked that long to fire up a carby bike...

[vickytulla]

@pete alrght I will do exactly the same... but I do no where the RX3 crank shaft poistion sensor is...

Originally Posted by pete

Disconnect the pump from the injector...
there should fuel coming out the hose when
you turn the key on then it should stop after a second or so
then push the start button while the motor is cranking over
again fuel shoud come out of the hose to the injector...

if this all works as intended... remove the injector reconnect it
to the hose and crank the motor over on the start button there
should be a mist of fuel comeing out of the injector.. (hold a peice of paper in front of it see if it gets wet)
Make sure the power wires are pluged into the injector while doing this test
the injector also may need to be earthed to the motor...

If all this works fine & there is spark at the plug the next place to look
would be the crank shaft postion sencer... it is what tells the injector
when to fire a shot of fuel.. if it is not right it could be sending the shot of
fuel at the wrong time...

[vickytulla]

battery arrived today as that day battery of fitable size wasnt available this is 12AMP battery I hope it can rotate the ignition motor..
putting it on intial charging

[pete]

Is that a starting battrey ?
looks like a deep cycle....



.

[RockyDS]

Originally Posted by pete

Is that a starting battrey ?
looks like a deep cycle....



.

Info online ...

Technology AGM
Brand LONG
Model LONG AGM
Ref # WP12-12

[vickytulla]

Originally Posted by RockyDS

Info online ...

Originally Posted by pete

Is that a starting battrey ?
looks like a deep cycle....
.

is deep cycle a good thing or a bad thing ? the shop owner said its the best selling he had.. its made in vietnam I guess..


tmorrow I will go back to the work shop to try starting it ... I hope I get sucess...

[pete]

Originally Posted by vickytulla

is deep cycle a good thing or a bad thing ? the shop owner said its the best selling he had.. its made in vietnam I guess..


tmorrow I will go back to the work shop to try starting it ... I hope I get sucess...

A deep cycle is for running lights , wheel chairs , golf carts ,
back up power for alams etc ...They can deliver there rated out put
for a long time.. but not surply enough amps in one hit to turn a starter motor..

A starting battrey has to be able to deliver a lot of amps in one hit..
the CCA rateing "CCA = Continus Cranking Amps"
a 12AH starting battery could deliver 120amps for a very short time. (120CCA)

[vickytulla]

ok this is a really help ful info sems like I got a very good battery I hope it fires up the bike like charm...

its specs says it will deliver 180AMP for 5 seconds ..

Originally Posted by pete

A deep cycle is for running lights , wheel chairs , golf carts ,
back up power for alams etc ...They can deliver there rated out put
for a long time.. but not surply enough amps in one hit to turn a starter motor..

A starting battrey has to be able to deliver a lot of amps in one hit..
the CCA rateing "CCA = Continus Cranking Amps"
a 12AH starting battery could deliver 120amps for a very short time. (120CCA)