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Camshaft timing

Tiny
TARRI
  • MEMBER
  • 2000 FIAT SIENA
  • 1.6L
  • 4 CYL
  • 4WD
  • MANUAL
  • 480,000 MILES
I would like to set camshaft timing with no marking on a pulley. How do I set it?
Saturday, October 16th, 2021 AT 9:22 AM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

There are no timing marks for the camshafts. Fiat requires the use of a special tool that locks to the rear of the camshafts.

Please keep in mind, this is an interference engine. If timing is off, it can cause internal engine damage.

I attached two pics below. The first shows the camshaft positioning and the second is a pic I found online showing the tool needed.

I hope this helps. See if you can rent the tool. I wouldn't recommend doing it without one.

Take care,

Joe

See pics below.
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Saturday, October 16th, 2021 AT 10:33 PM
Tiny
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Thanks Joe, much appreciated. First picture for camshaft positions is blank could you resend please?
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Sunday, October 17th, 2021 AT 10:00 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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That's interesting. Let me know if you get it.

Joe
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Sunday, October 17th, 2021 AT 8:28 PM
Tiny
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Thanks, I've got it. It's so interesting because on the picture there's marking but not on the original pulley.
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Monday, October 18th, 2021 AT 1:31 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

At times, I believe they do things like that to make it a little more difficult for people to work on. If you get the tool, it should only fit one way, so you'll know it's right.

When you get it back together, turn the engine by hand several revolutions to make sure there is no internal interference between the pistons and valves. If it stops turning, don't force it.

Take care. If you have a chance, let me know how things turn out for you.

Joe
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Monday, October 18th, 2021 AT 5:04 PM
Tiny
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Much appreciated.I'll let you know.
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Tuesday, October 19th, 2021 AT 4:30 AM

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