when to replace plugs?
#1
when to replace plugs?
hey all I recently discovered that after going through all my service records for my truck I found that even though I've had all my proper oil and filter changes my spark plugs have yet to be replaced. I've got a 2000 Ranger XLT V6 4.0L(OHV i think ) with almost 68000 on it. I was wondering what the normal time frame is until you should replace your plugs with rangers?
Also does anyone have any recommendations on replacement plugs? I'm hoping maybe it will help improve my gas mileage a bit too
Also does anyone have any recommendations on replacement plugs? I'm hoping maybe it will help improve my gas mileage a bit too
#2
#5
#6
Yeah.. you shoudl post a pic of yoru engine bay, then we can tell if your running an OHV or SOHC..
The plugs were a pain on my own SOHC (Pre-bodylift anyway) and the wires were easy as pie pre-bodylift.. simple pop and push type job on them.. installed my coilpack at the same time, which is the best time to do it =)
The plugs were a pain on my own SOHC (Pre-bodylift anyway) and the wires were easy as pie pre-bodylift.. simple pop and push type job on them.. installed my coilpack at the same time, which is the best time to do it =)
#7
They are rated for 100k miles.
I'll tell you this though. The popular opinion on this board is that no other plug will perform better than stock. This not true. See my web page
I'll tell you this though. The popular opinion on this board is that no other plug will perform better than stock. This not true. See my web page
#9
They are rated for 100k miles.
I'll tell you this though. The popular opinion on this board is that no other plug will perform better than stock. This not true. See my web page
I'll tell you this though. The popular opinion on this board is that no other plug will perform better than stock. This not true. See my web page
The best plug to use on Ford vehicles that haven't been bastardized, or have the $hite run out of them, are
the Motorcraft double or fine wire platinums.
Last edited by Takeda; 07-28-2008 at 08:12 AM.
#10
#11
Definately not my experience with my 3.0L:
New Motorcraft double platinum:
Motorcraft double platinum with 50K miles:
Did you buy your truck new, so you know the mileage is accurate?
#13
Bob, yes my link proves nothing. But come sit in my truck and you can see for yourself it idles smooth as silk. Definately better than the stock plugs.
Hook up a wideband A/F guage and you can see it runs leaner at WOT. (more of the fuel being burnt)
The stock plugs are fine. I'm not saying they aren't. Just know that there is a "better plug" out there. They cost a small fortune but are a very good plug that will stand up to many years of abuse, nitrous, boost, and will still idle smooth after 50k miles of that kind of hard usage.
Rich
Hook up a wideband A/F guage and you can see it runs leaner at WOT. (more of the fuel being burnt)
The stock plugs are fine. I'm not saying they aren't. Just know that there is a "better plug" out there. They cost a small fortune but are a very good plug that will stand up to many years of abuse, nitrous, boost, and will still idle smooth after 50k miles of that kind of hard usage.
Rich
#15
I notice that the Denso plug in your picture has a much shorter "reach" than the stock plugs.
#16
They cost a small fortune but are a very good plug that will stand up to many years of abuse, nitrous, boost, and will still idle smooth after 50k miles of that kind of hard usage.
Have you personally run these plugs for >50K miles in a vehicle with boost or nitrous, or are you picking this up from advertisement HYPE?
#17
#19
Bob back off. I'm not a punk kid who reads what some marketting weenie posted on a companies web page.
To answer your question. Yes
I not only have in the past, but am currently **still running** the same Denso IT20s in the caddy (100shot of nitrous and 50k+ miles of family car duty)
Rich
#20
Bob back off. I'm not a punk kid who reads what some marketting weenie posted on a companies web page.
To answer your question. Yes
I not only have in the past, but am currently **still running** the same Denso IT20s in the caddy (100shot of nitrous and 50k+ miles of family car duty)
Rich
To answer your question. Yes
I not only have in the past, but am currently **still running** the same Denso IT20s in the caddy (100shot of nitrous and 50k+ miles of family car duty)
Rich
I got to tell you I'm really shocked about that Northstar running more than 50K miles!
#21
Its a 2001 eldorado. Here is a VIDEO
And yes it has COP ignition.
I choose to do some research on that motor instead of following the popular opinion. I educated myself on what typical failures happen.. then prevent them! It's now got 88k miles on it and has seen many 100shot runs down the dragstrip. Oh and.... on the same plugs.
Rich
#22
Its a 2001 eldorado. Here is a VIDEO
And yes it has COP ignition.
You and everyone else knows of the northstars "reputation".
I choose to do some research on that motor instead of following the popular opinion. I educated myself on what typical failures happen.. then prevent them! It's now got 88k miles on it and has seen many 100shot runs down the dragstrip. Oh and.... on the same plugs.
Rich
And yes it has COP ignition.
You and everyone else knows of the northstars "reputation".
I choose to do some research on that motor instead of following the popular opinion. I educated myself on what typical failures happen.. then prevent them! It's now got 88k miles on it and has seen many 100shot runs down the dragstrip. Oh and.... on the same plugs.
Rich
#23
Do you know what the "chronic head gasket problem" was? Do you know what GM did to address it? Do you know what year they addressed it? Do you know how a northstar owner can make sure it never happens?
Not sure what your fishing for Bob. But the motor is all original and the tranny too. Both get oil changes and I've never seen one sliver of metal or excessive wear.
Just because something is "oem" does not mean it's the best. I'll not argue it'll work just fine. But as an OEM engineer I can tell you that nearly everything we do is filled with compromises. Most often it's manufacturing consessions. The second most compromise is to protect for 150k miles and the owner ignoring maintainence of thier car.
There are several rules of thumb that I hold to with hot rodding near stock cars.
1) Allow *everything* to warm up before pushing it. (motor, tranny, brakes, bearings, ect..)
2) Never allow something to get too hot.
3) Octane is your friend. (pay attention & take care of your friend)
4) Never over rev a engine.
5) Avoid "shocking" anything mechanicaly.
Do those and you'll be able to push a stock vehicle past what most people consider to be "safe".
It's all in the science of thermal cycling and physical loading.
Rich
Last edited by wydopnthrtl; 07-28-2008 at 02:10 PM.
#24
#25
Hence my point. Popular opinion does not equate to fact.
Do you know what the "chronic head gasket problem" was? Do you know what GM did to address it? Do you know what year they addressed it? Do you know how a northstar owner can make sure it never happens?
Do you know what the "chronic head gasket problem" was? Do you know what GM did to address it? Do you know what year they addressed it? Do you know how a northstar owner can make sure it never happens?
Here are the TSB's, just for the Northstar V-8, only on the 2001 Eldorado:
http://www.cadillacforum.com/recalls...00914D/TSB.htm
http://www.cadillacforum.com/recalls..._01012/TSB.htm
http://www.cadillacforum.com/recalls...604032/TSB.htm
http://www.cadillacforum.com/recalls..._01393/TSB.htm (beauty -- head gaskets)
http://www.cadillacforum.com/recalls..._01771/TSB.htm
http://www.cadillacforum.com/recalls..._01792/TSB.htm
http://www.cadillacforum.com/recalls..._02006/TSB.htm (beauty -- engine replacement)
http://www.cadillacforum.com/recalls...01009A/TSB.htm (beauty -- burning oil)
http://www.cadillacforum.com/recalls...604014/TSB.htm
http://www.cadillacforum.com/recalls...04024D/TSB.htm
http://www.cadillacforum.com/recalls...02004B/TSB.htm
http://www.cadillacforum.com/recalls...063003/TSB.htm
http://www.cadillacforum.com/recalls...d_0804/TSB.htm
http://www.cadillacforum.com/recalls...d_3036/TSB.htm
http://www.cadillacforum.com/recalls...d_3951/TSB.htm (beauty -- knocking noises, burning oil)
ALL TSB's for 2001 Eldorado:
http://www.cadillacforum.com/recalls...r_2001/TSB.htm
And this URL is great.....ever heard of the Chevy sales slogan "Heartbeat of America"....this might be where it originated:
http://pistonslap.com/
My approach to these kind of problems: I know better than to buy a GM product!!!!
Last edited by Takeda; 07-28-2008 at 03:57 PM.