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Cold Start Issue
Posted: Fri Jan 28, 2022 1:13 am
by JOH
Hi all,
My injected Scala is taking two or three turns of the ignition to get it started from cold. Seems like fuel is not getting through on first / second turn then fires up fine.
I've heard talk of 5th injector being the culprit although are replacements available? Any suggestions?
Thanks!
Re: Cold Start Issue
Posted: Fri Jan 28, 2022 1:40 pm
by chopperoli
no need to post the same thing 3 times
I'd recommend you to get a fuel pressure tester. you should check the operation of the cold start injector and thermo time switch. lots online about this stuff
this might be useful too:

Re: Cold Start Issue
Posted: Fri Jan 28, 2022 6:29 pm
by mark1gls
Might be a good idea to test the 5th injector before buying a new one as could be various things.
Remove the 5th injector and place it in a jar, start up the engine and see if any fuel comes out.
The 5th injector is controlled by a thermo switch on the main coolant outlet on the the front of the head, there is a guide to testing the thermo time switch in the Haynes manual.
Re: Cold Start Issue
Posted: Fri Jan 28, 2022 10:30 pm
by DannyH
stab the accelerator a few times?
worked for me for many years!
Re: Cold Start Issue
Posted: Fri Jan 28, 2022 10:53 pm
by RussGLAuto
Re: Cold Start Issue
Posted: Sat Jan 29, 2022 1:23 am
by DannyH
It was my daily driver, not a toy.
I needed a practical solution and it worked, I'm not a purist!
Was fine for 12 years and I'd tried all the rest?


Re: Cold Start Issue
Posted: Sat Jan 29, 2022 9:15 am
by Village Idiots
Good un, Danny.
A pragmatic Northern solution!
Hope you're keeping well.
Re: Cold Start Issue
Posted: Sat Jan 29, 2022 1:19 pm
by JOH
Thanks all