Timing Belt?

General discussion forum for J30 and M30 owners!
j30t_Dan
Posts: 111
Joined: Mon Apr 14, 2008 10:09 pm
Car: 2009 Nissan Sentra SE-R

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Hey guys.. been a while.

I am having some start issues. were at 175,000 and my last timing belt change was around 97,000. At start I get a momentary squeal and then it subsides. Once at high speed things seem alright but i am losing pickup and startup is rather shakey. I also feel the rpm of the engine at idle. Change the timing belt?


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yodawill2000
Posts: 3888
Joined: Thu Mar 24, 2005 4:10 pm
Car: 94 Infiniti J30
Location: Grand Prairie TEXAS

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Squeal sounds like a loose accessory belt.

Have you cleaned the Maf ?New Air and Fuel Filter ?

gr8scott72
Posts: 1220
Joined: Thu Feb 16, 2006 1:37 pm
Car: 1994 Infiniti J30t

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yodawill2000 wrote:Squeal sounds like a loose accessory belt.

Have you cleaned the Maf ?New Air and Fuel Filter ?
And new OEM plugs?

j30t_Dan
Posts: 111
Joined: Mon Apr 14, 2008 10:09 pm
Car: 2009 Nissan Sentra SE-R

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All accessory belts are ok. I will clean the air filter right away and fuel filter and get back to you

gr8scott72
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Joined: Thu Feb 16, 2006 1:37 pm
Car: 1994 Infiniti J30t

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j30t_Dan wrote:All accessory belts are ok. I will clean the air filter right away and fuel filter and get back to you
If you have squeal on start up, then all of your accessory belts are NOT ok. One of them is loose. (Probably your alternator belt.)

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yodawill2000
Posts: 3888
Joined: Thu Mar 24, 2005 4:10 pm
Car: 94 Infiniti J30
Location: Grand Prairie TEXAS

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To add to Scotts comment the J belts need to be REALLY tight.

Not like an ole' Chevy

j30t_Dan
Posts: 111
Joined: Mon Apr 14, 2008 10:09 pm
Car: 2009 Nissan Sentra SE-R

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I have been cranking them really hard but it seems it only momentarily fixes my squeal. Then in a week it returns. Any suggestions? Should I be buying a top shelf belt?

GerryO
Posts: 974
Joined: Fri Feb 09, 2007 11:47 am
Car: 1993 J30t
Pearl White
Black Interior

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The inside surface of old, cracked, dirty, loose, noisy belts can become glazed, making them more prone to slipping. A slipping belt makes more of a short chirping sound, especially on a cold, wet morning start-up, when the engine is gunned or the PS is cranked far to one side or the other.

Idler pulley bearings can dry out too, and they'll squeal longer. The AC idler bearing is the most exposed one. The timing belt is toothed and it won't squeal, but it runs on two idler and one tensioner bearing. I also believe that there is such a thing as belts that are too tight (note the specs and the one member who had his WP housing break).


j30t_Dan
Posts: 111
Joined: Mon Apr 14, 2008 10:09 pm
Car: 2009 Nissan Sentra SE-R

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good call. I will check both. Thanks alot man your knowledge makes my life easier

Victor
Posts: 515
Joined: Sun Apr 06, 2008 5:51 am
Car: 1994 Infiniti J30T

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My alternator/water pump belt was squealing. I tightened it up and it was O.K for about a month and then started squealing again. I couldn't tighten it up anymore because I was at the limit of adjustment. Then a few days later it broke, luckily only two miles from my home. If I would have been out in the middle of the desert when that happened I would have been in big trouble. See my posts on belt replacement and power steering pump belt tension adjustment for the gory details. Here is a link for info about belt failures.http://www.gates.com/brochure....d=540

GerryO
Posts: 974
Joined: Fri Feb 09, 2007 11:47 am
Car: 1993 J30t
Pearl White
Black Interior

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Great link/information!

Thanks, Gerry

j30t_Dan
Posts: 111
Joined: Mon Apr 14, 2008 10:09 pm
Car: 2009 Nissan Sentra SE-R

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Awesome! problem solved. And for much much cheaper than a new TB. Thanks guys


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