My LX ie touring 2013 wont start 15-30 mins after a ride
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Member
vespa lx ie touring 150 2013
Joined: 08 Feb 2021
Posts: 10
Location: Philippines
Mon Feb 08, 2021 7:18 pm quote
Hello guys, I bought an LX ie 150 2013 model here in the Philippines. It has 3K km on it. The bike starts and runs with no problems coming out of the garage. However after turning it of after a 45-60 mins ride it wont start at all. It's cranking alright but refuses to start as if there is no fuel. After cooling it down for about 30mins, it starts and runs like nothing happened. Changed the plugs to NGK cr9eb (can't get the original cr8eb here) and oil that is suitable for hotter climates they say (10w40). Still having the same problem. I did a band aid solution by installing a computer fan powered by a cellphone powerbank after turning it off and tried starting it after 15mins, it did start again with no problems. Am I correct to assume that the engine's temp still rises up after turning the engine off because the motor fan of the vespa shuts off with the ignition? Any lead will be greatly appreciated guys.
Thank you.
Molto Verboso
2006 LX150 (carbed) | 2007 GT200
Joined: 29 Jun 2016
Posts: 1267
Location: Toronto
Wed Mar 03, 2021 6:50 am quote
I've seen similar posts on here talking about defective fuel pumps giving the symptoms you described. It's normally in the context of a GTS, but given you have an IE fuel-injected model, it must also have a fuel pump - any chance that's acting up?
Molto Verboso
Primavera ET3 & PX150 & GTS 300 & NIU NQi Sport
Joined: 05 Apr 2009
Posts: 1510
Location: Berlin
Wed Mar 03, 2021 9:48 am quote
I've had an LX 125 i.e. from 2010. The fuel pump was replaced after a recall from Piaggio.
Hooked
2012 LX150ie
Joined: 28 Jul 2018
Posts: 138
Location: Austin Texas USA
Wed Mar 03, 2021 10:13 pm quote
Just to confirm
The fuel-injected
LX ie does have a fuel pump, at least my US model does. I don’t have any experience with this problem, though.
Hooked
2012 LX150ie
Joined: 28 Jul 2018
Posts: 138
Location: Austin Texas USA
Wed Mar 03, 2021 10:21 pm quote
After re-reading, The OP also asked
If the ‘motor fan’ shuts off with the ignition. As far as I know, the LX150 is totally passively air-cooled. There is no radiator and there is no fan. [/u]
Molto Verboso
Primavera ET3 & PX150 & GTS 300 & NIU NQi Sport
Joined: 05 Apr 2009
Posts: 1510
Location: Berlin
Wed Mar 03, 2021 10:54 pm quote
No, it's force-air cooled. The fan is on the RH side where the water-cooled models have their water pump.
Member
vespa lx ie touring 150 2013
Joined: 08 Feb 2021
Posts: 10
Location: Philippines
Wed Mar 03, 2021 10:54 pm quote
Re: After re-reading, The OP also asked
Jimjar wrote:
If the ‘motor fan’ shuts off with the ignition. As far as I know, the LX150 is totally passively air-cooled. There is no radiator and there is no fan. [/u]
I get you, actually as a band aid solution I attach a computer fan on the opening of the fan attached to a powerbank as power supply. It shortens the waiting time for it to start again.
Thank you very much.
Molto Verboso
Primavera ET3 & PX150 & GTS 300 & NIU NQi Sport
Joined: 05 Apr 2009
Posts: 1510
Location: Berlin
Wed Mar 03, 2021 11:00 pm quote
You could try riding a half-empty tank and stopping at a gas station. If filling up with cooler gas decreases your wait time, then your problem is a hot fuel pump.
Addicted
S150, Beo 500ie
Joined: 14 Aug 2019
Posts: 545
Location: Bermuda
Thu Mar 04, 2021 4:20 am quote
3k miles sounds far too early for this to present itself, but difficulty with warm starts is a prime symptom of valves that need to be adjusted.
Member
vespa lx ie touring 150 2013
Joined: 08 Feb 2021
Posts: 10
Location: Philippines
Thu Mar 04, 2021 1:33 pm quote
Der Blechfahrer wrote:
You could try riding a half-empty tank and stopping at a gas station. If filling up with cooler gas decreases your wait time, then your problem is a hot fuel pump.
Oh man thisis so good, for diagnostics yes that would cool the pump fast "if the impeller is really getting caught in something as the reason for the recall was."
Thank you.
Member
vespa lx ie touring 150 2013
Joined: 08 Feb 2021
Posts: 10
Location: Philippines
Thu Mar 04, 2021 1:34 pm quote
Juan_ORhea wrote:
3k miles sounds far too early for this to present itself, but difficulty with warm starts is a prime symptom of valves that need to be adjusted.
Thank you
Addicted
Primavera 150
Joined: 17 Sep 2017
Posts: 503
Location: Long Beach, CA
Thu Mar 04, 2021 1:47 pm quote
Were the valves ever adjusted?
Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 39546
Location: Pleasant Hill, CA
Thu Mar 04, 2021 2:23 pm quote
In my experience, the main symptom in Leader engines that need valves adjusting is that they tend to stall easily between 30 seconds and two minutes after starting until they are fully warmed up. Hot starts are not usually a problem.

The symptoms described here are exactly that of a heat-seized fuel pump. When the engine is hot, the pump is running, and the bike is moving then all is well. Stop for more than a few minutes and the heat from the engine gets into the fuel, and the (faulty) pump innards expand and jam up enough that they won't easily start turning again.

You don't have to replace the whole pump assembly (not cheap), just the pump itself.
Member
vespa lx ie touring 150 2013
Joined: 08 Feb 2021
Posts: 10
Location: Philippines
Thu Mar 04, 2021 5:49 pm quote
pokeyjoe wrote:
Were the valves ever adjusted?
No , Haven't adjusted valves because of the mileage (3k km)
Member
vespa lx ie touring 150 2013
Joined: 08 Feb 2021
Posts: 10
Location: Philippines
Thu Mar 04, 2021 5:52 pm quote
jimc wrote:
In my experience, the main symptom in Leader engines that need valves adjusting is that they tend to stall easily between 30 seconds and two minutes after starting until they are fully warmed up. Hot starts are not usually a problem.

The symptoms described here are exactly that of a heat-seized fuel pump. When the engine is hot, the pump is running, and the bike is moving then all is well. Stop for more than a few minutes and the heat from the engine gets into the fuel, and the (faulty) pump innards expand and jam up enough that they won't easily start turning again.

You don't have to replace the whole pump assembly (not cheap), just the pump itself.
Thank you, I will probably do that but after collating all these wonderful replies I am receiving.
Addicted
Primavera 150
Joined: 17 Sep 2017
Posts: 503
Location: Long Beach, CA
Thu Mar 04, 2021 8:30 pm quote
jmpc1234 wrote:
pokeyjoe wrote:
Were the valves ever adjusted?
No , Haven't adjusted valves because of the mileage (3k km)
Weren't they supposed to be adjusted at 1K?
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