Regarding my 2009 Honda Fit (Sport) - I’m about to hit 100,000 miles. With my old honda CRX I was told to replace the timing belt and water pump by 100,000. From what I can researched the fit has a chain belt? I just wanted to get opinions other than dealership/mechanics. Appreciate all your help. The last advice was spot on regarding my spark plug issue. Have a great day and thanks.

 

Change your oil on time or early and just keep driving it. If you hear the chain slapping (which is very rare and is usually caused by lack of oil maintenance) stop driving the car and have the timing set replaced.

Occasionally a tensioner will fail but for the most part on Hondas the timing chain will last the life of the car.

With the water pump you only have to replace it when it leaks or gets noisy. Since it isn't part of the timing set its not a scheduled maintenance item. (Its "external" to the engine and the only thing it might hurt is your serpentine belt) You may want to get your coolant changed but there is a maintenance minder for that.

 

Manufacturers went to timing belts a long time ago, presumably to save money. But belts have durability issues and failure could be catastrophic so the trend seems to have reversed and they've gone back mostly to metal chains internal to the engine and lubricated by engine oil. The chains are extremely durable but I've noticed that in the new oil standard just coming into the market now (ILSAC GF6A/B, API "SP") improved chain lubrication is one of the key components of this new spec which implies there have been some concerns about the oil we have been using. My 2018 Fit has a chain and I am happy about that and I believe all Fits have had timing chains. No maintenance required, just make sure you change your engine oil regularly.

 

As stated above, chain doesn't require a thing unless making noise. Our Fit has just under 200k miles and chain is fine. Others have gone over 400k without chain replacement, so no worries.

If not already addressed, your Fit is due for a valve adjustment.

 

Can confirm. 551k miles here and on the original chain, chain tensioner, and even water pump, although I plan on replacing the latter sometime in the future.

 

551,000 miles???!!!??? Seriously ???!!!??? That's incredibly impressive, and good to hear....heck, with the mileage I put on, or lack thereof, my '15 will outlast me. Need to get my gearbox oil changed, and want new tires, but am too cheap to replace them until needed.....bought it CPO, original owner must've replaced the originals, these Coopers will.not.wear,out!!!

 

My mech tells me no adjustments are needed unless the engine is idling rough.

 

Your mechanic is wrong. By the time it's idling rough, you have likely damaged the valve seats, guides and seals due to the exhaust valves getting too tight. Not loose.

Not to mention the large issue these cars have with ejecting spark plugs. To each their own, but I would not exceed 100k miles without a spark plug change and I would do the valve adjustment at that time. That's at minimum. With a GD, I'd do it more frequently.

 

it is actually due to the increased soot in the oil in GDI engines, which wears the timing chains. The new spec oils are a way to deal with this issue via lower volatility, additive package in light of the increased soot, lighter viscosity for fuel economy, etc. I’m still amazed at how quickly the oil turns sooty black in my GK vs our GE.

 

I just had the valves checked and adjusted by our mechanic. Instead of being too tight from seat recession, they were all about a millimeter LOOSE (2010 Fit Sport MT with about 117K miles, 90% freeway driving). Interesting.

 

Since the valve adjustment spec is in the hundredths of a millimeter (and accordingly, thousands of an inch), it really isn't possible that they were a millimeter out of spec.

 

Well the point is they were loose rather than tight. Perhaps he mispoke.

 

I replaced my serpentine belt and my car turns off, could I have messed with the timing chain and skipped somehow.

so far I hear noise from my crank pulley and car turns off.

anybody have similar issues?

 

I do not see how the cam chain could be affected by replacing the serpentine belt.

Check your serpentine belt installation again.

 

Why do this cars go into limp mode
acceleration high and can’t accelerate