please help! broke down
10-18-2007, 06:32 AM
#26
Jack Of All Trades
Join Date: Jun 2004
Location: Acton, California
Posts: 2,296
For you n00bs, check here. The gap is the same for n/a & TT. Some people here are correct, you ALWAYS check the gap and adjust as required. I've never installed a set of 4, 6, or 8 plugs where at least one plug didn't need an adjustment.
NGK Sparkplugs
I think you're a little confused and you might want to buy a timing light. Our cars need the base timing set to 15* btdc. It is checked with a timing light and adjusted by rotating the CAS. The ECU assumes that the base timing is at 15* and adjusts the spark timing and fuel maps based upon that.
NGK Sparkplugs
Originally Posted by Goofyz
I guess i don't understand....you don't set the gap on the plugs for a z32. The car does it itself. Any new plug should be close enough so the computer can adjust to work with the other plugs. That's part of the charm of individual ignition coils... But if you feel like checking the gaps and using a timing light for tuning, i suggest you get a Ford or Chevy.
10-18-2007, 09:14 PM
#27
Registered User
Join Date: Nov 2003
Location: Gerber, CA
Posts: 3,672
Originally Posted by willkrom1990
and the oil pressure light never did come on. i didn't even know there was one. but on that note, might there be a low oil pressure cut off? i figure that if a generator has one then a 300zx might.
Replace your sending unit....problem solved.
10-19-2007, 07:57 AM
#28
Registered User
Join Date: Feb 2006
Location: Ohio
Posts: 459
The Nissan Factory Manual
Originally Posted by CanyonCarver
For you n00bs, check here. The gap is the same for n/a & TT. Some people here are correct, you ALWAYS check the gap and adjust as required. I've never installed a set of 4, 6, or 8 plugs where at least one plug didn't need an adjustment.
NGK Sparkplugs
I think you're a little confused and you might want to buy a timing light. Our cars need the base timing set to 15* btdc. It is checked with a timing light and adjusted by rotating the CAS. The ECU assumes that the base timing is at 15* and adjusts the spark timing and fuel maps based upon that.
NGK Sparkplugs
I think you're a little confused and you might want to buy a timing light. Our cars need the base timing set to 15* btdc. It is checked with a timing light and adjusted by rotating the CAS. The ECU assumes that the base timing is at 15* and adjusts the spark timing and fuel maps based upon that.
States that Gap does not have to be set. And if you are loosening the bolts on your CAS when you replace your spark plugs... you my friend, have way too much free time. Performance suffers? What performance? Gas Milage? 1/4 mile times? What are you guys NASA engineers? Trying to get the extra 0.02 seconds in your 0-60 times and you think your gap being a couple thousands of an inch different than the ones in the other cylinders will help you be a better driver? As long as they (the gap on the spark plugs) look the same, you wont notice a difference on the Z32. I'm happy enough when I get 25 mpg on the highway. But if you guys really want to spend more time in the garage than you have to, then I guess that's why they call it a hobby.
If you buy plugs from a store, inspect them before you buy them, that way you can avoid the ones with suspected impact damage.
10-19-2007, 08:09 AM
#29
The Cake Is A Lie!
Join Date: May 2003
Location: WA
Posts: 5,690
Originally Posted by Goofyz
States that Gap does not have to be set.
And if you are loosening the bolts on your CAS when you replace your spark plugs... you my friend, have way too much free time.
But if you guys really want to spend more time in the garage than you have to, then I guess that's why they call it a hobby.
Last edited by entropy31; 10-19-2007 at 08:20 AM.
10-19-2007, 06:52 PM
#30
Hoov for Pres!
Join Date: Sep 2007
Location: Tempe AZ
Posts: 959
Damn. If I didn't like wrenching on my own vehicles I would send it to a mechanic that I couldn't fully trust and call it good. But a whole minute to test and adjust spark plugs is the norm to me.
Only thing I don't adjust the spark plugs on is the diesel engines I work on at work...
Only thing I don't adjust the spark plugs on is the diesel engines I work on at work...
10-20-2007, 05:07 AM
#31
Jack Of All Trades
Join Date: Jun 2004
Location: Acton, California
Posts: 2,296
Originally Posted by Goofyz
.....And if you are loosening the bolts on your CAS when you replace your spark plugs... you my friend, have way too much free time.
10-20-2007, 05:44 AM
#32
Registered User
Join Date: Dec 2005
Posts: 352
Originally Posted by Ratfink
Damn. If I didn't like wrenching on my own vehicles I would send it to a mechanic that I couldn't fully trust and call it good. But a whole minute to test and adjust spark plugs is the norm to me.
Only thing I don't adjust the spark plugs on is the diesel engines I work on at work...
Only thing I don't adjust the spark plugs on is the diesel engines I work on at work...
Well I would certainly hope not.....
11-07-2007, 03:26 PM
#33
Registered User
Join Date: Nov 2007
Posts: 12
Originally Posted by willkrom1990
major problems with my new (to me) N/A 1990 300zx. the oil pressure guage has been useless. i know this because it changes very quickly and stays on zero for sometimes very long amounts of time. been driving like this for almost 1500 miles. i'm about to change it. but today i started it to leave work and as i pulled out, it seemed to be missing. it continuted to miss very consistently all the way home. the engine has a rattle... maybe something thats been there though. in conclusion, power starved, wierd smells, running very rough, and sounding pretty... rough, but not smoking and still shows plenty of oil pressure when the guage is working. please help! does it sound like oil deperivation or actually a spark miss? and what do i do? i did get new plugs and pressure sending unit. they'll be in tomarow. and thanks to everyone that has helped me so far. this forum is awesome.
11-07-2007, 05:24 PM
#34
Pr0n Addict
Thread Starter
Join Date: Sep 2007
Location: virginia
Posts: 4,617
i did the sending unit and when i started the car the pressure read close to 100. the other prblems still remained. i have done new heads, injectors, lifters, some other things then all the obvious things associated with the job. i'll let you know if the problem is fixed when i get the beast back together.
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