Need camshaft displacement specs. Cams moved while timing belt off. 2.5 ltr opposed-4. Starts but VERY rough, backfires.

yet again
no car body stated, an ISUZU WHAT?> is this too much to ask?
no country,
no year stated,
and the poster dont know all books are indexed by...
drum roll, country model, then year., (all 3 missing, is this fun?)
and this engine, is twin cam.. the correct name is
6ve1 99 to 2004? is 3.5L
the early 2 cam is called 6VD1W (w= 4 cams total)
1998 to 2002 on usa spec troopers (guess #2)
the 2 cams in one head are gear driving side by side,
we have posted this answer on this forum over 5 times
search much>?

did i guess right? so now ill post again this data. using online official sources, not rag books.
photos posted yet again, here we go, the hard way, guessing the freakn car,.. wow.
called the VIN V engine. here.USA>







and the words

1. Verify that the sprocket timing marks are still aligned and that the groove and the keyway on the crankshaft timing sprocket align with the mark on the oil pump. The white pointers on the camshaft timing sprockets should align with the dots on the front plate.
2. Install the timing belt. Use clips to secure the belt onto each sprocket until the installation is complete. Align the dotted marks on the timing belt with the timing mark opposite the groove on the crankshaft sprocket. NOTE The arrows on the timing belt must follow the belt's direction of rotation. The manufacturer's trademark on the belt's spine should be readable left-to-right when the belt is installed.
3. Align the white line on the timing belt with the alignment mark on the right bank camshaft timing pulley. Secure the belt with a clip. WARNING If any binding is felt when adjusting the timing belt tension by turning the crankshaft, STOP turning the engine, because the pistons may be hitting the valves.
4. Rotate the crankshaft counterclockwise to remove the slack between the crankshaft sprocket and the right camshaft timing belt sprocket.
5. Install the belt around the water pump pulley.
6. Install the belt on the idler pulley.
7. Align the white alignment mark on the timing belt with the alignment mark on the left bank camshaft timing belt sprocket.
8. Install the crankshaft pulley and tighten the center bolt by hand. Rotate the crankshaft pulley clockwise to give slack between the crankshaft timing belt pulley and the right bank camshaft timing belt pulley.
9. Insert a 1.4mm piece of wire through the hole in the pusher to hold the rod in. Install the pusher assembly while pushing the tension pulley toward the belt.
10. Pull the pin out from the pusher to release the rod.
11. Remove the clamps from the sprockets. Rotate the crankshaft pulley clockwise 2 turns. Measure the rod protrusion to ensure it is between 0.16-0.24 in. (4-6mm).
12. If the tensioner pulley bracket pivot bolt was removed, tighten it to 31 ft. lbs. (42 Nm).
13. Tighten the pusher bolts to 14 ft. lbs. (19 Nm).
14. Remove the crankshaft pulley. Install the lower and upper timing belt covers and tighten their bolts to 12 ft. lbs. (17 Nm).
15. Fit the oil cooler hose onto the timing cover and tighten its mounting bracket bolts to 16 ft. lbs. (22 Nm).
16. Install the crankshaft pulley and tighten the pulley bolt to 123 ft. lbs. (167 Nm).
17. Install fan pulley assembly and tighten the bolts to 16 ft. lbs. (22 Nm).
18. Install and adjust the accessory drive belts.
19. Install the cooling fan assembly and tighten the bolts to 72 inch lbs. (8 Nm).
20. Install the upper fan shroud.
21. Install the air cleaner assembly and intake air duct.
22. Connect the negative battery cable

and wants head torque too, need egg in your beer?

It is really difficult to time these dbl overhead cam engines if you don't have the special tool. There is a fixture for holding the camshafts in place while the belt is being replaced but it is not cheap. It can be done but if you don't have the crank, both cams and the balance shaft all dead on perfect it is not going to run right. It sounds like you have one off a tooth. I did one on a Sonata recently and I found that everything moves when you apply the tension so I had to compensate the other direction the, amount of rotation caused by belt tensioner and had to do it several times to get it right.

Sounds like the timing marks between the crank and camshaft are off. Turn the engine over manually until the crank pulley is at top dead center(TDC) remove the timing belt cover, and check to see if the camshaft marking (notch) is pointing at the proper mark, which I believe is aligned with the front side of the cylinder head on that model, but check the timing belt alignment specs to be sure.

No, you will have open valves when the timing marks are aligned. This will create spring pressure and will want to move the cams to a neutral position. This is why you need the retaining tool to hold the cams in the proper location while the belt is replaced.

P0340 - Cam Timing

SYMPTOMS/CONDITIONS
of a mistimed camshaft system (all must apply):

1. Camshafts have previously been removed from the engine.
2. Engine runs rough.
3. Vehicle sets P0340 (camshaft sensor code).
4. Camshaft sensor has been checked with a known, properly operating camshaft sensor.

CORRECT:
The diagram in the manuals should show the timing marks on both cam gears to be on the blue timing chain links.

take the head off bent valves thats for sure

4 Cylinder diesel(4JX1) :
1 - Timing mark
2 - Cam pulley
3 - HP Oil pump pulley
4 - Tensioner pulley




6 Cylinder petrol:
Align crank(C) timing notch mark (1) to oil pump mark.
Align cam pulley(L+R) marks(3) to cylinder head marks
The cam belt has 3 marks, 2 lines and one mark that is actually a row of dots. Align the dots to the crank pulley groove mark(2) and align the other 2 lines to the cam pulley marks. Using a clothes peg to hold the belt to the cam pulleys works wonders to keep it in place while fitting. Please note the arrows on the belt and have them point in the direction of rotation - right to left side of engine
W - water pump pulley
I - Idler pulley
T - Tensioner pulley.

If for some reason you need to realign the cams on each bank :
Standing in front of the car and starting from YOUR left , looking at the cams you should see RE, RI, LI, LE on each of the camshafts.(R for right bank, L for left bank, I for intake and E for exhaust) Right bank camshafts are marked with one dot, left bank with 2 dots on the shaft itself. To align the camshafts to each other each cam shaft gear has a mark on it. Draw an imaginary line between the centre of the camshaft and the centre of the pulley. The alignment mark should be between the two along this imaginary line. The result will be that RI an RE will be at the top of each gear. The same with the left bank.

The top camshafts need to be 'locked' into place. You can purhase or rent a tool to do this. If you don't hold the cams in place they will move when the belt tension is released. Always set the crank to top dead center and mark all gears just in case.

Crankshaft match marks


Align marks on timing belt pulley and pump body.

Camshaft pulley alignment marks

1. Align marks on camshaft pulleys with alignment marks on seal plate.
2. Install timing belt. NOTE: No looseness should exist on the tension side and at the camshaft pulleys.
   
3. Loosen tensioner lock bolt.
4. Turn crankshaft 2 revolutions in direction of rotation and check that timing marks are still in alignment.
5. Tighten timing belt tension lock bolt to 27-38 ft lb (32-52 Nm).
6. Apply a force of 22 lbs to timing belt between camshaft sprockets.
7. Belt deflection should measure 0.30-0.33 in (7.5-8.5 mm)
8. NOTE: Replace tensioner spring if timing belt deflection is excessive.

Timing Belt Installation

1. Install lower timing belt cover.
2. Install upper timing belt cover.
3. Install power steering drive belt and adjust belt tension.
4. Install fan pulley.
5. Install generator drive belt and adjust belt tension.
6. Install A/C drive belt and adjust belt tension.
7. Install splash guard.
8. Install fan and fan shroud.
9. Install 4 fan bolts. Tighten to 24 ft lb (33 Nm).
10. Install fan shroud mounting bolts.
11. Install fresh air duct.
12. Connect hose to resonance chamber.
13. Connect battery negative cable.

There are no marks on this one. There is a special tool set to align camshafts ($900). The best you can do is to bring #1 cyl to TDC compression with both cam(valve) covers off. #5 cyl should have lobes at equal opening, exhaust just closing and intake just opening.. #1 cyl cam lobes should each be diametrically opposed to the positions of #5. If cams need to be moved, there is no registration of gear onto cam. Just loosen bolt holding gear and move cam. Retighten bolt. Roll thru 2 crank revolutions and check cam timing again.Simple.