C3 Phase I random starting issues

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frenchc3
Posts: 12
Joined: 12 Jun 2026, 17:22

Re: C3 Phase I random starting issues

Unread post by frenchc3 »

Hi @ozvtr,

Thanks for the feedback. Another problem might be the tension in the accessories belt. How would I go about tightening the belt, I can't find any video. Do I simply increase the torque on the tensioner central bolt?
thanks
ozvtr
Posts: 849
Joined: 13 Oct 2020, 01:11
x 233

Re: C3 Phase I random starting issues

Unread post by ozvtr »

I'm sorry but I'm not familiar with the tensioner on the stop start.
However the standard engines had two types of tensioners. The engines built before 2004 had a lead-screw adjuster. Tension was adjusted by turning the lead-screw and locked in position by the bolt in the center of the pulley bearing. The other type had a spring inside the tensioner and the tension was automatically adjusted.
If you cant see the lead-screw (looks like a very long bolt going up and down) behind the tensioner pulley, I'd say it's the spring loaded type and there is no adjustment.