Thread: sr20de cranks but wont start

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2014-10-30 22:01:56

#61

mbrider

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Originally Posted by KillerKrossover

Originally Posted by mbrider

Is this right? I have #1 cylinder TDC

No, either your cam timing is off or the crank pulley has separated, giving a false tdc mark. Check true TDC for #1 cylinder with a long screw driver and rotate the crank so it at the highest point.

If you look at 3:00 o'clock on CAS disc, the #1 cylinder big slot is visible. It's not supposed to be visible if you are truely #1 TDC. At true #1 TDC, the big slot would be covered by the CAS sensor. What your pic shows is the CAS is reading #3 cylinder.

Megasquirt Support Forum (MSEXTRA) ? Compatible Crank Angle Sensors (CAS, CKP) (View topic)

This is how it is now after making sure its tdc again and the cam gears have the small dot aimed upwards and the first cam lobes closest to the cam gears are facing away from each other[img][URL=http://s44.photobucket.com/user/mbrider89/media/20141030_155440_zpszae8mhtz.jpg.html][IMG]http://i44.photobucket.com/albums/f6/mbrider89/20141030_155440_zpszae8mhtz.jpg[/img][/URL][/IMG]

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2014-10-30 22:08:02

#62

mbrider

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Originally Posted by lynchfourtwenty

then the rotor should point at #1, not #4

well shit then i have no idea what the hell is wrong cuz it's at #4 with it like that picture

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2014-10-30 22:08:52

#63

KillerKrossover Online/offline status of KillerKrossover is unknown

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Like Lynch said the rotor should be pointed at #1 based on the cam chain and sprockets pic.

Here's some info about the CAS disc. It has 360 slots on the outside edge and 4 slots on the inside. The 4 slots represent TDC compression for each cylinder. So there is no mistake as to whether it's on the compression for intake TDC. The is a 2:1 gear ratio between the crank and cam sprockets. This mean the crank spin twice as fast as the camshafts. When you rotate the crank 360 degrees, the camshaft and CAS disc has only move 180*.

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Go Fast Mods: 10-30w oil, NGK, 15* timing, VVL sticker

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2014-10-30 22:13:22

#64

zeneffect

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Index of /manuals/Sentra

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2014-10-30 22:41:40

#65

1fastser

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Could the end of the distributor (that is keyed for the cam) be damaged?

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2014-10-30 23:06:10

#66

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In this pic the ecu thinks the engine is at #2 TDC

[img][URL=http://s44.photobucket.com/user/mbrider89/media/20141030_155440_zpszae8mhtz.jpg.html][IMG]http://i44.photobucket.com/albums/f6/mbrider89/20141030_155440_zpszae8mhtz.jpg[/img][/URL][/IMG]

In this pic, it thinks the engine is at #3 tdc. So you are off by +-180 off.

Now the question is, did you touch the camshafts? Taking them on and off.

BTW, take some pic of the cam sprocket and chain at TDC for #1. You using somebody else pic does not help. We need to know your engine.

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2014-10-30 23:15:45

#67

mbrider

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Originally Posted by KillerKrossover

I think i found the problem I went to take the distributor off to turn it 180 and found this

(

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2014-10-30 23:17:58

#68

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Originally Posted by 1fastser

Could the end of the distributor (that is keyed for the cam) be damaged?

yup found out the end of the cam was broke and the distributor key is broke

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2014-10-31 01:16:58

#69

1fastser

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Originally Posted by mbrider

Originally Posted by 1fastser
Could the end of the distributor (that is keyed for the cam) be damaged?

yup found out the end of the cam was broke and the distributor key is broke

Only seen it one other time but glad you found it...do you have or need another dizzy? I have one as I'm sure many others do too.

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2014-10-31 01:19:06

#70

mbrider

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Originally Posted by 1fastser

Originally Posted by mbrider
Originally Posted by 1fastser
Could the end of the distributor (that is keyed for the cam) be damaged?

yup found out the end of the cam was broke and the distributor key is broke

Only seen it one other time but glad you found it...do you have or need another dizzy? I have one as I'm sure many others do too.

I don't have a dizzy I'll have to wait till i get some money I do have another cam so i'll put that in tomorrow

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