Timing Issues... please Help
Thread Starter
Honda-Tech Member
Joined: Aug 2004
Posts: 54
Likes: 0
From: las cruces, new mexico, usa
Timing Issues... please Help
Timing Belt broke so replaced it. aligned all gears to TDC, put belt on.
it first runs great and timing is dead on at the ignition timing (w/ timing light) is at the 12 mark (3 lines on crank pully) then once i put a load on it (a/c or drive around block) it runs poorly and i re-check the timing and it lines up at the TDC mark on the pulley instead of the 12 mark. Anyone have any suggestions on what could be the cause of this? I have changed the timing (rotating crank gear one revolution to see if the bottom gear was 180 degrees off) didnt start. so i put it back to my original TDC on all gears, starts just runs poorly when drive.
Could i just have bent a valve or two? would it be noisy, because my engine sounds great, no knocking. What are the symptoms? I just dont know how my timing changes when i check before i drive and after.
I understand the correct markings and how to get all gears to TDC, my issue is the timing is changing from when i first set it and then drive it. Initially, the ignition timing (with timing light) 3 grouped markings on the crank pulley (12 degrees) is lined up with the reference point, then check later and the light shows the SINGLE mark on the pulley (TDC) is in line with the reference point . When i hold the RPM at 3k and check timing it seems to be ok, but when lower RPM it the timing is off again. Why is the timing changing before and after i drive? could moving the distributor fix this?
it first runs great and timing is dead on at the ignition timing (w/ timing light) is at the 12 mark (3 lines on crank pully) then once i put a load on it (a/c or drive around block) it runs poorly and i re-check the timing and it lines up at the TDC mark on the pulley instead of the 12 mark. Anyone have any suggestions on what could be the cause of this? I have changed the timing (rotating crank gear one revolution to see if the bottom gear was 180 degrees off) didnt start. so i put it back to my original TDC on all gears, starts just runs poorly when drive.
Could i just have bent a valve or two? would it be noisy, because my engine sounds great, no knocking. What are the symptoms? I just dont know how my timing changes when i check before i drive and after.
I understand the correct markings and how to get all gears to TDC, my issue is the timing is changing from when i first set it and then drive it. Initially, the ignition timing (with timing light) 3 grouped markings on the crank pulley (12 degrees) is lined up with the reference point, then check later and the light shows the SINGLE mark on the pulley (TDC) is in line with the reference point . When i hold the RPM at 3k and check timing it seems to be ok, but when lower RPM it the timing is off again. Why is the timing changing before and after i drive? could moving the distributor fix this?
Honda-Tech Member
Joined: May 2008
Posts: 90
Likes: 0
From: orlando
Re: Timing Issues... please Help
Timing Belt broke so replaced it. aligned all gears to TDC, put belt on.
it first runs great and timing is dead on at the ignition timing (w/ timing light) is at the 12 mark (3 lines on crank pully) then once i put a load on it (a/c or drive around block) it runs poorly and i re-check the timing and it lines up at the TDC mark on the pulley instead of the 12 mark. Anyone have any suggestions on what could be the cause of this? I have changed the timing (rotating crank gear one revolution to see if the bottom gear was 180 degrees off) didnt start. so i put it back to my original TDC on all gears, starts just runs poorly when drive.
Could i just have bent a valve or two? would it be noisy, because my engine sounds great, no knocking. What are the symptoms? I just dont know how my timing changes when i check before i drive and after.
I understand the correct markings and how to get all gears to TDC, my issue is the timing is changing from when i first set it and then drive it. Initially, the ignition timing (with timing light) 3 grouped markings on the crank pulley (12 degrees) is lined up with the reference point, then check later and the light shows the SINGLE mark on the pulley (TDC) is in line with the reference point . When i hold the RPM at 3k and check timing it seems to be ok, but when lower RPM it the timing is off again. Why is the timing changing before and after i drive? could moving the distributor fix this?
it first runs great and timing is dead on at the ignition timing (w/ timing light) is at the 12 mark (3 lines on crank pully) then once i put a load on it (a/c or drive around block) it runs poorly and i re-check the timing and it lines up at the TDC mark on the pulley instead of the 12 mark. Anyone have any suggestions on what could be the cause of this? I have changed the timing (rotating crank gear one revolution to see if the bottom gear was 180 degrees off) didnt start. so i put it back to my original TDC on all gears, starts just runs poorly when drive.
Could i just have bent a valve or two? would it be noisy, because my engine sounds great, no knocking. What are the symptoms? I just dont know how my timing changes when i check before i drive and after.
I understand the correct markings and how to get all gears to TDC, my issue is the timing is changing from when i first set it and then drive it. Initially, the ignition timing (with timing light) 3 grouped markings on the crank pulley (12 degrees) is lined up with the reference point, then check later and the light shows the SINGLE mark on the pulley (TDC) is in line with the reference point . When i hold the RPM at 3k and check timing it seems to be ok, but when lower RPM it the timing is off again. Why is the timing changing before and after i drive? could moving the distributor fix this?
Honda-Tech Member
Joined: Dec 2008
Posts: 71
Likes: 0
Re: Timing Issues... please Help
should it be at 16 degrees +-2 degrees off the red mark? I just did a valve adjustment and swapped distributor. Mine ran fine except i loss a lot of power until i advanced the timing a lot.
Thread Starter
Honda-Tech Member
Joined: Aug 2004
Posts: 54
Likes: 0
From: las cruces, new mexico, usa
Re: Timing Issues... please Help
From RicksAutomotive: play with the distributor. sounds like a ignition timing issue. although you breaking the belt, IDK. did you at least check the valve lash? i would think that a bent valve will not come up fully and leave a muck greater valve clearance due to it being bent and not able to close fully
Thread Starter
Honda-Tech Member
Joined: Aug 2004
Posts: 54
Likes: 0
From: las cruces, new mexico, usa
Re: Timing Issues... please Help
Havent check the valve lash or done a compression test. Thats next if I cant get it to run ok.
Just started it, timing was at the three markings on the crank pulley at idle. run for a bit and rev it the timing drops to the TDC mark.
Should i check timing at 3k or at idle?
Just started it, timing was at the three markings on the crank pulley at idle. run for a bit and rev it the timing drops to the TDC mark.
Should i check timing at 3k or at idle?
Thread
Thread Starter
Forum
Replies
Last Post