choice spark plugs

[nokia]

i want replace spark plugs on my 1990 C 1500 5.7 truck. i must buy in internet, but there are many .
based your experience what you suggest ? manufacture? iridium? platinum ? normal ?

ps. have suggestion also for spark plug cables ? (if I need to change those too)

thanks to everybody

 

[ram1220]

I always used normal Champion plugs in my 90 Sierra 5.7l. I never had a problem. All of those fancy plugs will just lighten your wallet.

 

[94burbk1500]

I really like NGK 3547 platinum plugs, but any new copper plug gapped properly will work just fine and run better than a tired old plug. As far as wires go, i like silicone wires, rockauto.com has a nice tune up kit made by United Motor Products with cap, rotor, and silicone wires for pretty cheap, I've put about 6k miles on mine with no issues.

 

[Jared Jackson]

I put the platinum version of the NGK tr-55’s in my truck, working great!

 

[kennythewelder]

I use plat AC Delco

 

[454cid]

I've got the platinum AC Delco's... I think the 3rd set including the originals. I've got 285K miles. I've got some regular/non-platinum NGKs, that I thought I'd try, but they're still sitting on my parts shelf. I've heard that regular plugs run better in high mileage engines.

 

[nokia]

thank to all for your suggest
my truck have 149.ooo miles on dash ....but i don't know if are real. at the moment i can't drive because awaiting Italian register test for get italian licence plate. visually the engine should be good ,run well , but when go to start engine after one week of sleep , it need 3-4 second of motorstart befor get going . it is normal ? i know the need serius test for understand status. but in meantime i want start to search and buy service component as filters spark drive belt ect , but for plug the choice is very big .

 

[kennythewelder]

thank to all for your suggest
my truck have 149.ooo miles on dash ....but i don't know if are real. at the moment i can't drive because awaiting Italian register test for get italian licence plate. visually the engine should be good ,run well , but when go to start engine after one week of sleep , it need 3-4 second of motorstart befor get going . it is normal ? i know the need serius test for understand status. but in meantime i want start to search and buy service component as filters spark drive belt ect , but for plug the choice is very big .

You may have low fuel pressure. This will cause the truck to take a while to start. If the fuel pressure is low, the fix is to replace the fuel pump most of the time. You have an OBD I computer system in your truck. You can look on you tube and there are a lot of videos there that show how to get you ECM codes. You can do this with a paper clip, on your truck. But low fuel pressure will not show up on this test. For this you need to do a fuel pressure test. There are videos on you tube for that too.

 

[kennythewelder]

Oh and 149,000 miles are low miles for your truck. I have 243,000 on my 97. I have seen these trucks with over 400,000 miles, and I just joined Chevy lendgens club. There are trucks like ours there with over 1,000,000 miles on them.

 

[Oldblue98]

thank to all for your suggest
my truck have 149.ooo miles on dash ....but i don't know if are real. at the moment i can't drive because awaiting Italian register test for get italian licence plate. visually the engine should be good ,run well , but when go to start engine after one week of sleep , it need 3-4 second of motorstart befor get going . it is normal ? i know the need serius test for understand status. but in meantime i want start to search and buy service component as filters spark drive belt ect , but for plug the choice is very big .

Fuel pressure losing prime more than likely when sitting, try turning your key to on position for a few seconds before you start cranking on it, and let fuel pressure prime.