Replacing timing chain . I need firing order on a 2.4 twin cam engine please.

1 3 4 2

THE CARS VIN 8TH DIGIT TELL WHAT ENGINE IS THERE, so which one is it.?
check all fuses first, as in all (cab and bay boxes)
and battery must be charged and good first. and kept charged for this service and testing.
no spark on just one cylinder or all ,(no engine told of 2)???????
the service manual covers all that.

so starter does crank the engine fast?and robustly? not slow as slug.
1.9 L, SOHC, SINGLE CAM
1.9l DOHC TWIN CAM ENGINE
2.0l
3.0L ? V6?
THEY ARE not THE SAME AT ALL , FOR EFI OR SPARK
BUT Both engines run a pair of twin coil packs
rule1:
the 2 HV lugs on each pack both must be wired to the correct spark plug !!!

or firing order is noW dead wrong and fails. called wasted spark.

rule2
2nd rules is it those old 24 year old wires sets (junk) if one fails open, that makes 2 spark plugs go dead and bingo it will never start as 2 cylinder engine ever. never ever run 24 year wire sets, of fail you will !!!
go NGK mag-wire sets in fact. best.
rule 3: wasted spark
to test spark never pull 2 HV wires on one coil pack . test HV wires 1 by 1 using clean new test spark plug.
yes 2 can be tested at the same time but lets skip how now, do thme 1 at a time
spark tests. do not skip any.



scan the PCM yet for DTC errors, be big shame to miss out ,omg the PCM sees CMP or CKP dead. cam or crank sensors errors or coil pack errors.

Id have new spark wires installed this old. 24 years.
and now rule #4 wasted spark
do not pull off all wires to it replacing the pack
do so 1 wire off old pack on back on to the same exact lug. on new pack
or , firing order is lost.


for the 1.9L (wild guessing me the engine)
if you get it all messes up the cure is here
4 and 1 fire same time
2 and 3 fire same time, paired.

the timing marks are to line up and face each other
then fin the chain
then turn the crank until the crank sprocket is facing down timing mark is facing down
the cam mark should be in the 2 oclock position
there should be 15 links between marks
form your description that is what you have done so the problem is not in the timing chain installation
back firing is normally from a valve still open when the spark occurs so check firing order or the distributor installation is not 180 degrees out

right it a twin cam engine
the cam chain between the two cams
depends what cams are there
do these help

h25 engine? h27, same. this engine, not the J20 right?
just a chain job, but not cams removed or head removed, be clear on JOB, what was removed, matters.

you only need TDC #1 firing and the marks,
firing order is the cams job, (and pcm) only marks matter....!! for a chain job.

here are fsm words (why not login to mitchell's and read)
WARNING(new head)
Wait1/2hour after installing the lash adjusters and camshafts before cranking or starting the engine to allow the lash adjusters to bleed down. Operating the engine before this time period may result in interference between the valves and pistons.


the real Fsm covers this in pages 345 to 368
need that?
here read the manual all steps, skip none and win.
23pages , my guess to late.


http://jeepdied.com/look/24hr/SQ416-h25-h27-chain%20steps.pdf

I don't know what car you have, so here's what was needed on mine:
1. Bring engine to Top Dead Center, ready to fire #1. There should be a mark on the front pulley or on the flywheel. Move cams to the TDC mark, too. My car was twin cam, the front cams needed to face apart, and set the marks....

Yours may be different.

I suspect that you have 2 plug leads crossed in the firing order. The cam shaft will not be broken or it would not run. You may need to check that the valve timing is correct if you have changed the chain as it is critical that it is right. 1 tooth out makes a big difference to running.

Did you get the timing set correctly when you reattached the cam to the timing chain? It sounds like you didn't have the #1 Top dead center or the cams were in the wrong position when you reset the timing chain. The cam shaft and Crank will actually look like they are set correctly two times. Once when it is in time and once when it is out of time 180 degrees. If you are more than 5 degree out of time or more than 5 degrees from the point where it is 180 degrees out of time the engine normally won't fire at all. The easiest way to check and verify this is to do compression checks on the cylinders, you will find you have little or no compression on several cylinders if this is the case. To correct it remove the timing chain and set the crank to #1 Top Dead center. Then go to the head that is on the #1 side, line the cam up so that both valves are closed for the number 1 and line that mark up. You have to find the firing order to make sure the intake is open getting ready to close for the next cylinder that going to fire and the exhaust valve is closed, then make teh final adjustment to line that cams timing mark up then replace the timing chain. This should get everything roughly within 5 degrees of zero and should get the motor so it will start.

According to Saturn timing specifications, the internal firing order for the Saturn 1.9L motor, both Single overhead cam, or Twin cam is as follows:
Left to right 1-3-4-2

If you are routing spark plug wires, and need to know the order of wires from the coils to the engine, the order is as follows:
Left to right 4-1-2-3

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

My sincere apologies for the extremely delayed response.
I am personally going back to answer your unanswered questions.
I have only been a free contributor to this site for the past 4-months.

I do not know if you still need this information, but I am going ahead and answering it anyway.

1. Non Turbo =VG30E. Turbo = VG30ET. In any case the Engine Cylinder numbers, Firing Order, and Distributor Connections are the same.

For the 3.0L:
Firing Order:
1-2-3-4-5-6
Cylinders:
(back of engine)
5--------6
3--------4
1--------2
(front of engine)
Distributor:
....(back)
.6......5......4
.|.......|........|
V......V......V
|..................|
|..................|
^.......^.......^
.|........|........|
1.......2.......3
....(front)

2. I am not sure what what "cam adjustments" you were looking for. I am sure you probably have taken care of that or found what you were looking for. However, in most cases the person is really asking about the Timing issue.

Click on the following Link for the Timing Belt/Chain Diagrams.

Again, my sincerest apologies:
http://www.2carpros.com/car_repair_information/year/1988/make/nissan/model/300zx/1988_nissan_300zx_timing_belt_diagram_marks.htm