Boxster start up noise

[bustingear]

hello I am new here. I live in Columbus Ohio and just bought my first Porsche. I restore antique autos and Hot Rods as a hobby. I just got this 99 Boxster and have noticed that upon start up for a short second a kazoo like noise. It is not everytime I start but only on occasion. I have changed oil , Replaced air and cabin filter, replaced oil seperator and will do thermostat and water pump this weekend.

I think this may be the starter or hopefully NOT somthing around the vario cam.
I would like some experienced voices to help me through this issue for DIY. Thanks in advance.
Dennis

[Lil bastard]

Well you need to isolate where the sound is coming from, possibly with an assistant and an auto stethoscope or the ol' screwdriver to the ear trick.

How many miles on the car? Starter sounds like a good bet - gunked up pinion gear shaft or overrun clutch. Could just need cleaning, but depending upon mileage, rebuild/replacement may be the most cost effective fix.

Being intermittent, it doesn't sound like variocam issues to me.

[bustingear]

145K on this little boxster. It will be hard to locate but again it sounds tlike a kids toy when a gear is stripped. Sound famalier?

[Viper5]

I have same issue! I noticed it a couple weeks ago. Sometimes I can hear it, others I can't. But it lasts for about 1-2 seconds and starts a few seconds after engine start. Is this what you are hearing also with the timeframe I've given?

[bluelagoon]

Mine does it too only with a cold start up. Was told it's lifter noise and not to worry about it. 2000S.

[Stroked & Blown]

bluelagoon,
Lifter noise - which I get as well after the car sits for a while and oil drains out of the lifters - doesn't sound like a kazoo or kids wind-up toy.
This seems different.

bustingear,
Do you have a video w/ sound or audio clip of it?

[ike84]

This may win an award for revival of the deadest (is that a word?) post ever.

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[Starter986]

I, too, had (and still have) that noisy rattle on start-up. Pulled the starter twice... sound remained.

I'm going with failing chain tensioners... suggesting that the sound is the loose chains making noise until the oil pressure is up. Yeah... 13 years later.

[ike84]

Originally Posted by Starter986

I, too, had (and still have) that noisy rattle on start-up. Pulled the starter twice... sound remained.



I'm going with failing chain tensioners... suggesting that the sound is the loose chains making noise until the oil pressure is up. Yeah... 13 years later.

Have you changed the pressure relief valve head to the updated part?

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[Starter986]

Originally Posted by ike84

Have you changed the pressure relief valve head to the updated part?

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If you're talking about that little part... unscrew/bolt the old one... slip in the new one... takes 2 minutes... oil pressure relief valve... yex. Did that about 4 years ago.

What I used to think was starter noise (thus pulling the starter twice... pulling on the little gear... snapped right back in... thus no starter noise... turns out to be those tensioners.

I'll be pulling off the oil pan this year to look for debris. Was zero when I bought the car.

Cheers!

[dsallean]

I have replaced the pressure relief valve, the timing chain tensioners, the variocam tensioner pads and new chains and the water pump and if anything the startup noise is worse.