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ZUKIWORLD Discussion Forum => Technical Discussion - Beginner / Repair => Topic started by: Stagecarpenter on August 14, 2010, 07:06:25 PM

Title: Is the 2.5 a interference type engine ?
Post by: Stagecarpenter on August 14, 2010, 07:06:25 PM

I just purchased a 2001 GV with 2.5 V6 with 106,000 miles . It's in great shape with no rust.I'm just wondering if I should go ahead and replace the timing chain.Also do the 2.5 require valve adjustments like the 1.3 s in the sammy's.

Title: Re: Is the 2.5 a interference type engine ?
Post by: wildgoody on August 14, 2010, 11:30:49 PM

I'm not sure, but I think it is, and why I think they put
a chain in that engine instead of a belt

Wild

Title: Re: Is the 2.5 a interference type engine ?
Post by: fordem on August 15, 2010, 08:06:33 AM

The 2.5 is an interference engine and has I believe three timing chains - before doing anything else, listen to it from a cold start - if you don't hear the chains rattling, then don't worry about them.

If you do hear them rattling, start with an oil & filter change, 10w30 or 10w40 depending on where you are, and see what that does for the rattle - a few seconds is fine, anything longer than that - say more than a minute is cause for concern.

The valves don't require periodic adjustment - it has hydraulic lifters.

Title: Re: Is the 2.5 a interference type engine ?
Post by: fordguy79 on August 15, 2010, 08:37:22 AM

Yes, Looking at my chilton book that is interfierence                                   Good luck

Title: Re: Is the 2.5 a interference type engine ?
Post by: wildgoody on August 15, 2010, 10:38:09 AM

Use 5-30 oil, not 10-30 or higher, the heavier oil has been reported
to cause chain stretch in these engines, presumably from excessive
pressure on the chain tensioner