First start with new cam - need help!
Thread Starter
Drifting
Joined: Jun 2001
Posts: 1,625
Likes: 1
From: Zagreb, Croatia
Re: First start with new cam - need help! (Bluevette85)
This technique I fouond on forum and I used it:
In the shop manual there's a technique that I use that only requires the engine be turned over (360 degrees) one time. You start with the timing mark set on zero with the #1 cylinder at TDC. (pull the first spark plug on driver's side to know when it's at TDC) In that position you adjust the following valves: Exhaust 1,3,4,8 Intake 1,2,5,7. Rotate the engine 360 degrees to zero. (This puts # 6 at TDC) adjust the following valves: Exhaust 2,5,6,7 Intake3,4,6,8. Done!
Thread Starter
Drifting
Joined: Jun 2001
Posts: 1,625
Likes: 1
From: Zagreb, Croatia
Re: First start with new cam - need help! (Ramanstud)
EDIT: I'm just going to sit here and scratch my head.
:blueangel:
:blueangel:
take some pics. :)
Thread Starter
Drifting
Joined: Jun 2001
Posts: 1,625
Likes: 1
From: Zagreb, Croatia
Re: First start with new cam - need help! (Sliding)
How can I make sure if I missed a tooth ?
Now when #1 is on firing position, timing mark on 0*, rotor is
almost perfectly lined up with #1 plug on cap.
Isn't this he way that it should be?
Now when #1 is on firing position, timing mark on 0*, rotor is
almost perfectly lined up with #1 plug on cap.
Isn't this he way that it should be?
Racer
Joined: Jul 2002
Posts: 275
Likes: 13
From: South Bend, Indiana
Re: First start with new cam - need help! (Sliding)
I'll pull the valve covers down anyway to check valve adjustment,
then I'll be sure when #1 is on firing.
BTW I borrowed timing light and timing is 53* ATDC :eek: :eek: :eek:
Could the engine run like that???
There is probably something wrong with this timing light.
then I'll be sure when #1 is on firing.
BTW I borrowed timing light and timing is 53* ATDC :eek: :eek: :eek:
Could the engine run like that???
There is probably something wrong with this timing light.
BTW, how did you determine it was 53 degrees atdc? Do you have a fully degrees balancer?
[Modified by jimtreber, 10:13 PM 8/3/2003]
[Modified by jimtreber, 10:15 PM 8/3/2003]
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Re: First start with new cam - need help! (jimtreber)
Ok silly question but..... did you swap any of the plug wires at the plugs themselves? Like are 1 & 3 backwards on the plugs but ok on the distibutor?
Burning Brakes
Joined: Dec 2000
Posts: 1,023
Likes: 0
From: Marietta, South Carolina, USA
Re: First start with new cam - need help! (Sliding)
Do you see 0 on the balancer if so make sure that you are on the compression and turn it over until the pointer is pointing at 0 that should be TDC and see if you have the Distributor is pointing at number 1 if so then you have then timing really close.
If you have really bad valve noise then that could hurt you too because the gap is not right and you may want to look at that too, it sounds like you have the valves too lose.
And since you had the intake off you may have a intake leak too that would make your engine run badly tooI would look into that.
Keep us posted.
PS Scorp508 is right you may want to check if you have the firing order is right.
Jay
[Modified by MrJay, 7:30 PM 8/3/2003]
If you have really bad valve noise then that could hurt you too because the gap is not right and you may want to look at that too, it sounds like you have the valves too lose.
And since you had the intake off you may have a intake leak too that would make your engine run badly tooI would look into that.
Keep us posted.
PS Scorp508 is right you may want to check if you have the firing order is right.
Jay
[Modified by MrJay, 7:30 PM 8/3/2003]
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Thread Starter
Drifting
Joined: Jun 2001
Posts: 1,625
Likes: 1
From: Zagreb, Croatia
Re: (scorp508)
Hi, sorry for replying so late but you know that time difference is very big.
I'm 100% sure that wires on distributor and plugs are on right position.
Balancer is old, but I don't think that the problem is in it, because I adjusted
timing a little bit before I disassembled engine and it was straight at 6*BTDC.
I have tried to install distributor all over again and I ended up
with same situation. The engine starts without problem but it's noisy
and it feels like it's misfiring. Throttle response is not good.
I'm begining to wonder if cam is in right position. I'm sure that it was
installed corectly ( crank 12, cam 6 o'clock ) but maybe the cam gear
(for distributor) wasn't installed correctly when it came from LPE.
Could that cause this kind of problems?
I'm also in position with installed cam, ported heads, headers but
with STOCK CHIP. I know that this can cause engine not to run
very good, but can it affect on setting base timing?
And thank you all for trying so much to help me.
I think that I woul be in deep s*** without your help right now.
I'll try to see if I have any error codes stored in ECM.
Talk to you later.
I'm 100% sure that wires on distributor and plugs are on right position.
Since I'm too lazy to go back an read, is the balancer new or reused? If reused how many miles on it? If old enough the inner hub could of slipped and rotated inside the outter hub.
timing a little bit before I disassembled engine and it was straight at 6*BTDC.
I have tried to install distributor all over again and I ended up
with same situation. The engine starts without problem but it's noisy
and it feels like it's misfiring. Throttle response is not good.
I'm begining to wonder if cam is in right position. I'm sure that it was
installed corectly ( crank 12, cam 6 o'clock ) but maybe the cam gear
(for distributor) wasn't installed correctly when it came from LPE.
Could that cause this kind of problems?
I'm also in position with installed cam, ported heads, headers but
with STOCK CHIP. I know that this can cause engine not to run
very good, but can it affect on setting base timing?
And thank you all for trying so much to help me.
I think that I woul be in deep s*** without your help right now.
I'll try to see if I have any error codes stored in ECM.
Talk to you later.
Drifting
Joined: Apr 2003
Posts: 1,292
Likes: 2
Re: (Sliding)
Just a thought - a stupid mistake I made, I checked the timing and it was showing about 35 degrees off but the car ran fine. :confused:
Bit of head scratching and I realised my new timing light was of the dial back variety, and it needed zeroing. The timing was actually only 2 deg out! :banghead:
Bit of head scratching and I realised my new timing light was of the dial back variety, and it needed zeroing. The timing was actually only 2 deg out! :banghead:
Thread Starter
Drifting
Joined: Jun 2001
Posts: 1,625
Likes: 1
From: Zagreb, Croatia
Re: (britvette)
Just a thought - a stupid mistake I made, I checked the timing and it was showing about 35 degrees off but the car ran fine. :confused:
Bit of head scratching and I realised my new timing light was of the dial back variety, and it needed zeroing. The timing was actually only 2 deg out! :banghead:
Bit of head scratching and I realised my new timing light was of the dial back variety, and it needed zeroing. The timing was actually only 2 deg out! :banghead:
light soon then I'll be sure.
Anyway, I checked ECM and I have error code:
42 Electronic Spark Timing Circuit (EST)
I believe that this code came with SES light when I disconnected
advance wire while trying to adjust timing.
But why is this error still stored? I don't have SES light now but when I
enter diagnostic mode it reads code 42.
Thread Starter
Drifting
Joined: Jun 2001
Posts: 1,625
Likes: 1
From: Zagreb, Croatia
Re: (Sliding)
I did everything one more time but this time I used my ear to tell
how the engine is running.
I got it to work a little bit better and went to test drive.
It's better now but still there is not enough power and some misfiring.
I tried the timing light that I used on my frindes car and it also
reads some crazy numbers so it looks that there is something wrong with it.
On Thursday I'll get reliable timing light and then I'll make sure that
timing will be right.
I'll keep you posted with results.
how the engine is running.
I got it to work a little bit better and went to test drive.
It's better now but still there is not enough power and some misfiring.
I tried the timing light that I used on my frindes car and it also
reads some crazy numbers so it looks that there is something wrong with it.
On Thursday I'll get reliable timing light and then I'll make sure that
timing will be right.
I'll keep you posted with results.
Thread Starter
Drifting
Joined: Jun 2001
Posts: 1,625
Likes: 1
From: Zagreb, Croatia
Re: (Sliding)
Finally, the timing is set. :) :) :)
I did everythin right the first time but the problem was
in timing light ( it was good only for 4 & 6 cylinder engines ).
Now, the timing is set to 6* BTDC. The valves are still a little bit noisier
than normal but I'm really begining to think that maybe it's normal
because of more agressive cam and harder valve springs.
Anyway I'll try to adjust valves one more time on Saturday and
I'll do it with engine running to be sure.
Next week I'll have to insure car and then I'll make some test drives to see
what did I gain but I'll start new topic about that.
Thank you for all your help.
:chevy :chevy :chevy
I did everythin right the first time but the problem was
in timing light ( it was good only for 4 & 6 cylinder engines ).
Now, the timing is set to 6* BTDC. The valves are still a little bit noisier
than normal but I'm really begining to think that maybe it's normal
because of more agressive cam and harder valve springs.
Anyway I'll try to adjust valves one more time on Saturday and
I'll do it with engine running to be sure.
Next week I'll have to insure car and then I'll make some test drives to see
what did I gain but I'll start new topic about that.
Thank you for all your help.
:chevy :chevy :chevy
