TRNW-2: MISCELLANEOUS, 2018 Silverado 5.3 with a misfire

[Tod Chretien]

Thank you for that info about the fuel rail puller Art.

I noticed they also say it is necessary to replace the injector seals 
whenever they are removed. Then they show some special installation tool 
and a re-sizer tool.

Does anyone know if I need those tools as well? I can't tell you how 
many times I have re-used injector seals. Although they have always been 
those really thick o-rings.


On 6/8/2025 6:03 AM, art landeck via trnw2 wrote:
> lifters collapse order a fuel rail puller now need that to remove the 
> fuel rail buy a good one cheap ones bend
>
> Tod Chretien via trnw2 wrote on 6/7/2025 9:52 PM:
>> TRNW Technical Discussion Forum
>> *Post ID:* 21395 
>> <https://www.trnw.net/trnw/forum_thread.php?post_id=21395&forum=2>
>> *Date:* Sat Jun 7 18:52:40 PDT 2025
>> *Subject:* MISCELLANEOUS, 2018 Silverado 5.3 with a misfire
>> This isn’t a transmission problem so please forgive me for that. I 
>> just bought a 2018 Silverado with 110K. It started making a light 
>> tapping noise on moderate to heavy acceleration. About 3 days later I 
>> had to punch it to beat some oncoming traffic and it started 
>> misfiring severely. The #1 cylinder is counting misfires so I pulled 
>> the spark plug and they definitely haven’t been replaced yet. Hoping 
>> for the best I replaced the spark plug but it’s still counting up on 
>> #1. I swapped the coil with #3 but it didn’t change. I hear the 
>> lifters on these AFM engines have issues. Does anyone know what goes 
>> wrong with the lifters and how to diagnose it? Would it have no 
>> compression? Sorry for the dumb question but book time is over 20 
>> hours and I don’t want to do the wrong thing. Any help or insight 
>> would be greatly appreciated.
>>
>> Tod Chretien
>> Ralph's Transmission
>> Modesto, California USA
>> tod at trnw.net
>>
>>
>>
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-- 
Best Regards,
Tod Chretien
TRNW Inc.
http://www.trnw.net
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