cold start valve question
Posted
#1024936
(In Topic #121913)
Settling In
cold start valve question
Hi Again Guys, just a quick question, ive been testing my cold start valve on my mk1 and it seems not to be working, i know it show squirt on cranking, but nothing, i have checked the power to it and there is, and i know that the thermo-switch earths this to run and when warm enough shuts off. my questions are how much power show be going to the cold start on crank (i measured 9.5 volts).
also i tested the cold start valve by running a bypass on the pump to run it without turning it over everytime, and putting a direct feed of power to and earth it and it worked good. so i can't understand why it wont work cranking over. i know it gets it opower from the starter motor. does the cold start valve run through a fuse or relay? cheers
batman
also i tested the cold start valve by running a bypass on the pump to run it without turning it over everytime, and putting a direct feed of power to and earth it and it worked good. so i can't understand why it wont work cranking over. i know it gets it opower from the starter motor. does the cold start valve run through a fuse or relay? cheers
batman
Posted
Old Timer
Posted
Settling In
if it dosen't have a relay it must run through a fuse, i can see it being a direct link off the starter motor. but you hink it should have a 12v feed to this.
Posted
Old Timer
it get's it power from the second pin on the starter motor through the earth path on the tts make or breaks the circuit,so as long as you have that it should work,no fuse needed
Posted
Settled In
sounds like a knackered tts :-)
Posted
Old Timer
I've had a problemwith my cold start valvefor a while in the there's no voltage to it. Can I run a lead from the starter motor to the the valve to test it then?
Posted
Local Hero
machine said
I've had a problemwith my cold start valvefor a while in the there's no voltage to it. Can I run a lead from the starter motor to the the valve to test it then?
Look at the wiring diagram - the TTS and cold start valve are both in the circuit, which is fed from terminal 50 either from the starter motor or the fusebox (+12V only when starter motor cranking). Its not just a case of running a wire here & there, you'd need to make up the correct circuit to test it, or wire a dash mounted switch independent of the TTS.
Posted
Newbie
As I have been having starting problems I tested the Cold Start Valve and it has around 9V and squirting fuel ok.
Considering the Starter is cranking drawing alot of power from the battery I would say it is very unlikely to have 12V as anyone with A voltage VDO guage would see it dip down to around 9V on cranking as I do.
Considering the Starter is cranking drawing alot of power from the battery I would say it is very unlikely to have 12V as anyone with A voltage VDO guage would see it dip down to around 9V on cranking as I do.
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