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Old 06-25-2018, 09:23 PM   #1
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Default chain rattle suddenly

1990 d21 ka24 4 cylinder single cab 4x4 roughly 205,000

Recently bought the truck 6 months ago. Maybe drive it 2 times a week as I bought it as a hunting truck. Been fixing it up little as needed. A week ago the the engine coolant temperature switch was flooding the engine. Got it home let it cool down for an hour. Still flooded and would'nt start. My other truck was at my shop and I was stranded.

Pulled the fuel pump relay under the hood and cranked it up. Was not fast enough to plug it back and and it bucked and ran out of fuel. Cranked it back up again same way...this time it stayed running. Went to parts store left it running and fixed the temperature switch. Since it bucked and ran out of fuel. Now have a slight but noticeable rattle in timing chain.

2-3 days ago. I start get chain rattle at start up. It never made a sound before at start up or running.

This my first hardbody. I did own 3 nissan/datsun 720's. Do they start rattling just out of the blue? Or is it a gradual symptom? Did the bucking and rough running knock something loose?

I usually run Marvel Mystery in it mixed with the oil? Would seafoam to clean and 5w or 0W sythetic and nissan filter help? Time to break and down and replace guides and chain? I would not imagine the chain just stretching out too far all of a sudden

Thanks for the help
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Old 06-25-2018, 09:37 PM   #2
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Time for a new timing set -- go with a name-brand, not ITM, etc. cheapos. Be sure to clean out the oil passages to the filter and pump too.

Read about the KA24E's timing guide failures. Mine went, for the first time, in the first year!
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Old 06-25-2018, 11:21 PM   #3
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mine did that too.....no noise to scare the heck out of ya in a few starts. As stated buy a quality timing set or deal with it again soon.
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Old 06-26-2018, 12:45 AM   #4
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Sounds good. Ive redone the head gasket and timing on a z24. i would assume the ka24 is similar.
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Old 06-26-2018, 11:42 AM   #5
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Yeap.
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Old 06-26-2018, 02:11 PM   #6
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Chances are the bucking disturbed an already-weak timing guide kit.

The chain will stretch a little over time, but the guides on the KA24e engines is a weak point.

If you are replacing the timing chain guides and tensioners, go ahead and get a kit that includes all of the parts. You can find kits with the timing chain, the sprocket, the guides, the water pump and an oil pump. As stated above, name brand parts translates to money well spent. You don't want one of these parts failing on you in 5000 miles.

After you replace all that stuff, this little truck can be your new daily driver, because it will be good for another 200k miles.

There are a couple of great write-ups on here with pictures and part numbers.

From 2011, Red-Aggie03's How to: Timing chain replacement on KA24E

From 2015, alabama_lowlife's Timing Chain replacement on KA24E
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Old 06-29-2018, 01:51 AM   #7
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Update
Changed the oil and went with 0w synthetic and new filter. Last couple days no rattle what so ever even on cold start after sitting over night. Good hope it will last a little longer.

Can anyone recommend a good parts brand? I've learned a long long time ago the little bit extra $$ in good parts is WAY cheaper than my time doing it twice! LOL

I just bought new tires and a winch. I would like to wear out both on this old truck!




https://photos.google.com/photo/AF1Q...4hiNwIVykQtxNZ

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Old 06-29-2018, 10:50 AM   #8
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None of your Google pics are working. Google Drive really sucks at forum posting. Those jerks don't seem to understand what a forum is.

If you want decent photo hosting for forums, go with one of those free accounts at http://imgur.com. It's got a little learning curve to figuring it out, but it's really simple to use once you are there.

Quote:
Originally Posted by cajunl View Post
Can anyone recommend a good parts brand? I've learned a long long time ago the little bit extra $$ in good parts is WAY cheaper than my time doing it twice! LOL
Red_Aggie03 listed all of the Genuine Nissan part numbers above. Honestly, you cannot get any better than that brand.
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Old 06-29-2018, 01:44 PM   #9
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Thanks for the info. I will go with nissan parts were I can.





Last edited by cajunl; 06-29-2018 at 01:55 PM.
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Old 06-29-2018, 02:12 PM   #10
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Holy shit!

Did all that front end come with it?

I'm interested in the mount for your Warn winch, and that light bar setup looks sweet too!
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