Go Back   Infamous Nissan - Hardbody / Frontier Forums > Tech Area > Engine and Drivetrain

Reply
 
Thread Tools Display Modes
Old 12-09-2017, 05:12 AM   #1
humungus
 
Join Date: Aug 2016
Location: San Diego, CA
Posts: 11
Vehicle: 1988 Nissan XE KingCab D21
Thanks: 0
Thanked 0 Times in 0 Posts
Default 1988 d21 2.4l correct timing?

What is the correct timing for my 88 Nissan with the 2.4 L 4-cylinder? I had believed it was 10 to 12, but when I got it smogged they failed it and said it should be 5 degrees before top dead center. I set it to that just to get it to pass smog (I'm in Commiefornia), but it seems to have a bit less pep and mileage is down a hair. Does anybody know what the correct timing is supposed to be? I had a service manual but lost it in the fires of 2007 when my place burned. (As an aside my hardbody saved my as that night... I left it idling in a field for hours, and used it to bug out after my place burned. Old faithful saved my ass!)
humungus is offline   Reply With Quote
Old 12-09-2017, 12:58 PM   #2
alabama_lowlife
Owner and Administrator
 
alabama_lowlife's Avatar
 
Join Date: Sep 2008
Location: jack, alabama
Age: 39
Posts: 9,000
Vehicle: 08 altima, 1970 Datsun 521, 1995 Nissan Hardbody x2
Thanks: 605
Thanked 1,587 Times in 1,299 Posts
Default

I think the FSM says 10 degrees BTDC. I'm at work so I can't check it, but the link is in my signature.
__________________
alabama_lowlife is offline   Reply With Quote
Old 12-09-2017, 05:13 PM   #3
humungus
 
Join Date: Aug 2016
Location: San Diego, CA
Posts: 11
Vehicle: 1988 Nissan XE KingCab D21
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I dl'd the d21_truck_1989.pdf version as I believe it's the same engine, but I can't find what section it would be in? For some reason it is not 'searchable' by using the Adobe search feature, which I find weird. I would believe it is in EF, EC, or FE sections, but can't find where it addresses anything other than valve adjustment...?
humungus is offline   Reply With Quote
Old 12-09-2017, 05:56 PM   #4
alabama_lowlife
Owner and Administrator
 
alabama_lowlife's Avatar
 
Join Date: Sep 2008
Location: jack, alabama
Age: 39
Posts: 9,000
Vehicle: 08 altima, 1970 Datsun 521, 1995 Nissan Hardbody x2
Thanks: 605
Thanked 1,587 Times in 1,299 Posts
Default

It should be in EC
__________________
alabama_lowlife is offline   Reply With Quote
Old 12-09-2017, 05:57 PM   #5
91nissan94
 
91nissan94's Avatar
 
Join Date: Sep 2008
Location: Crescent City FL
Posts: 1,414
Vehicle: 91nissan hb
Thanks: 65
Thanked 140 Times in 128 Posts
Default

I think timing is in the general maintenance section at the beginning.
91nissan94 is offline   Reply With Quote
Old 12-10-2017, 05:42 AM   #6
humungus
 
Join Date: Aug 2016
Location: San Diego, CA
Posts: 11
Vehicle: 1988 Nissan XE KingCab D21
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Found it! EF&EC page 205! It says 10 degrees BTC +/- 2 degrees.

I wonder why then the State of Commifornia says it must be 5 degrees? It actually failed the smog test simply because the timing was not 5 degrees which is what the State says it should have been. WTF? I don't get it. I wonder if I can get the amount they charged for the retest back since they are the ones that were wrong (in my opinion, and according to the service manual).

Anyway, thank you. I'm going to change it back to where it was and call it good. I don't notice anything overt, but it seemed to run better with it set at 10.

Thanks again!
humungus is offline   Reply With Quote
Old 12-10-2017, 03:21 PM   #7
cadillacdude1975
The Gear Jammer
 
cadillacdude1975's Avatar
 
Join Date: Apr 2013
Location: Chattanooga, TN
Age: 46
Posts: 8,807
Vehicle: 87 D21 SE KC V6 2wd 5sp & 86.5 V6 SE auto
Thanks: 317
Thanked 975 Times in 902 Posts
Default

what reading did it cause to make it fail the smog test? those tests in commufornia must be relentless.

i had my 87 tested in august. all they look for on one that old is verification of the vin vs the registration slip, they pressure check the gas cap and slide a mirror under the vehicle to visually verify the presence of a cat converter. then they probe the tail pipe while the computer works its magic.

did you have a NOX or CO2 reading that was high? if that was the problem, do the following trick. i have done it 4 or 5 times and by god it works.

go to home depot, lowes etc. buy one gallon of denatured alcohol from the paint section. run the fuel tank low...............less than a quarter tank if possible. pour the entire gallon in the tank and drive it to the testing center like you stole it to get the converter hot. it works. my 87 passed with lower readings than a brand new car. the guy couldnt believe the results he saw on the screen.

i laughed and drove to the courthouse for my new tag
__________________
"Im officially lost" - wildbill
cadillacdude1975 is offline   Reply With Quote
Old 12-10-2017, 04:25 PM   #8
Cusser
 
Cusser's Avatar
 
Join Date: Aug 2016
Location: Hot Arizona
Posts: 328
Vehicle: 2004 Frontier
Thanks: 0
Thanked 34 Times in 30 Posts
Default

For Arizona emissions testing (we go back to 1967 in two counties, no testing at all in the others), I had carbureted vehicles (including two old VWs) which I had to adjust leaner to pass the yearly test, then would set back to driveability conditions just after the test, until next year's test. What a crock !
__________________
2004 Frontier King Cab (2WD, 5-speed, 4-cylinder, 98.5K), 1998 Frontier regular cab (2WD, 5-speed, 4-cylinder 225K), 1988 Mazda B2200 (2WD, 5-speed, 4-cylinder, 214K), 1971 VW Convertible (140K), 2005 Yukon (180K), 1970 VW (260+K)
Cusser is offline   Reply With Quote
Old 12-10-2017, 06:32 PM   #9
johnber
grouchy old man
 
Join Date: Oct 2014
Location: Lynden WA
Age: 61
Posts: 986
Vehicle: 89 4X base
Thanks: 6
Thanked 116 Times in 106 Posts
Default

Thought Nissan went to the ka in 90?
__________________
89 regular cab, plain as it gets with a z-24 and posi's
johnber is offline   Reply With Quote
Old 12-10-2017, 10:25 PM   #10
alabama_lowlife
Owner and Administrator
 
alabama_lowlife's Avatar
 
Join Date: Sep 2008
Location: jack, alabama
Age: 39
Posts: 9,000
Vehicle: 08 altima, 1970 Datsun 521, 1995 Nissan Hardbody x2
Thanks: 605
Thanked 1,587 Times in 1,299 Posts
Default

Quote:
Originally Posted by johnber View Post
Thought Nissan went to the ka in 90?
They did.
__________________
alabama_lowlife is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 08:32 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.