I noted two oversights while watching this video and it probably answers Volkswatson's question of a year ago. It virtually applies to any occasion when you are setting up timing marks. FIRSTLY when checking the piston is coming up to top dead centre (with a long screw driver sitting on top of the piston, through the plug hole) you have to ensure the piston is actually on the compression stroke!!! Block the spark plug hole on No 1 cylinder with your finger and as you turn the pulley to bring the piston up- it should force/expel air from around your finger! If it doesn't, you are on the exhaust stroke and even though the piston is at top dead centre, the timing will be 180 degrees out! This is a common mistake when the belt is being replaced or while reassembling a striped down engine. SECONDLY- There is a certain amount of slack or lag between the lower crankshaft pulley moving and then the upper cam shaft pulley being moved by the belt. Peter sort of alluded to it while pointing at the bottom pulley at (see 22.10- 20). You can see the mark is not really in the right position and here's why- Assuming the belt is in place and the spark plugs have been removed, Fit a socket and lever bar on the crankshaft pulley's centre bolt (again 22.10). Now rotate the pulley a small way around by turning the bolt as if you were tightening it. This just loads up the belt and the pulleys under a certain amount of tension in the forward direction. Now, slowly apply reverse rotation to the crank pulley while watching the position of the cam shaft pulley as you do so. You will feel or observe that you can turn the crank pulley backwards a small amount, before the cam pulley actually starts to move. Once you have moved the crank backwards, try moving it slowly forwards again and again you will notice a slight lag between the two pulleys moving. This can be enough to put the timing marks out of alignment by one tooth on the belt. This is particularly common when you are refitting a belt! I often see beginners turn the crank pulley up to the mark too quickly and overshoot the mark as it were. The fatal mistake is then made to just wind the crank pulley backwards slightly, to get the marks to line up - there goes the slack in the system. If you have to back the crank pulley off, to then bring it forward again to the correct position, make sure you take it back far enough so that you remove any of the slack as you come up to the marks. Never turn the crank backwards to bring the marks into alignment! Always turn forward and ensure the tension in the system is being applied to all the components as you slowly bring the crank pulley forward to the desired point. It is easier to pause before the marks line up and then just gently tap on the lever bar with the butt of your hand to bring the bottom pulley into alignment with the mark. Then you can check to see if the top pulley is actually where it should be!!! I sincerely hope this helps cos they are easy traps for beginners and should have been highlighted.
Blast! I wish i had seen this video prior to paying way too much for a timing belt job! But thanks for posting my friend. Now i will know for next time.
Dont know what I'm doing wrong, but when I get everything lined up, install my belt and rotat the engine, the timing gets off on my crank vs cam. Any idea?
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I noted two oversights while watching this video and it probably answers Volkswatson's question of a year ago. It virtually applies to any occasion when you are setting up timing marks. FIRSTLY when checking the piston is coming up to top dead centre (with a long screw driver sitting on top of the piston, through the plug hole) you have to ensure the piston is actually on the compression stroke!!! Block the spark plug hole on No 1 cylinder with your finger and as you turn the pulley to bring the piston up- it should force/expel air from around your finger! If it doesn't, you are on the exhaust stroke and even though the piston is at top dead centre, the timing will be 180 degrees out! This is a common mistake when the belt is being replaced or while reassembling a striped down engine. SECONDLY- There is a certain amount of slack or lag between the lower crankshaft pulley moving and then the upper cam shaft pulley being moved by the belt. Peter sort of alluded to it while pointing at the bottom pulley at (see 22.10- 20). You can see the mark is not really in the right position and here's why-
Assuming the belt is in place and the spark plugs have been removed, Fit a socket and lever bar on the crankshaft pulley's centre bolt (again 22.10). Now rotate the pulley a small way around by turning the bolt as if you were tightening it. This just loads up the belt and the pulleys under a certain amount of tension in the forward direction. Now, slowly apply reverse rotation to the crank pulley while watching the position of the cam shaft pulley as you do so. You will feel or observe that you can turn the crank pulley backwards a small amount, before the cam pulley actually starts to move. Once you have moved the crank backwards, try moving it slowly forwards again and again you will notice a slight lag between the two pulleys moving. This can be enough to put the timing marks out of alignment by one tooth on the belt. This is particularly common when you are refitting a belt! I often see beginners turn the crank pulley up to the mark too quickly and overshoot the mark as it were. The fatal mistake is then made to just wind the crank pulley backwards slightly, to get the marks to line up - there goes the slack in the system. If you have to back the crank pulley off, to then bring it forward again to the correct position, make sure you take it back far enough so that you remove any of the slack as you come up to the marks. Never turn the crank backwards to bring the marks into alignment! Always turn forward and ensure the tension in the system is being applied to all the components as you slowly bring the crank pulley forward to the desired point. It is easier to pause before the marks line up and then just gently tap on the lever bar with the butt of your hand to bring the bottom pulley into alignment with the mark. Then you can check to see if the top pulley is actually where it should be!!! I sincerely hope this helps cos they are easy traps for beginners and should have been highlighted.
Hello, I read Your comment. Thanks. 👍😀
@@PeterFinnTheCarDoctor Thanks for the acknowledgement Peter. I am sure a lot of people have benefited from your video. H
@@howyfixer4890 thanks. set marks but they keep changing. will try again.
Man traductor spanish please i need help me 🙏🙏🙏
I like the video not only liking it bt also enjoyed.......thankx
Thank you so much 😀
Kiitos Peter, this is really helpful.
Any time
Excelente video ,muchas gracias Saludos desde La Paz Bolivia
muchas gracias por su video desde venezuela....
Thanks my Friend. 👍
thanks for this video,as well,mr finn.
You are very welcome
Blast! I wish i had seen this video prior to paying way too much for a timing belt job! But thanks for posting my friend. Now i will know for next time.
Thank You. :-)
Peter what about cam shaft first lobes? it should be pointing towords front of the vehicle , am i correct?
Yes that is another check you can use.
thank you peter for the video help me a lot
Dont know what I'm doing wrong, but when I get everything lined up, install my belt and rotat the engine, the timing gets off on my crank vs cam. Any idea?
good video Peter, very helpful.
Thanks for comment. :-)
Very good video.
I have a qestion
The 1996 engine timing belt could it work in a 1999 model what have a timing chain engine?
Yes
good video Thanks
Thanks
Hey Peter just wondering, I ordered a 88-93 belt by accident, but looks like it's cpatible for 4af and 4afe... Are they the same length and type?
Hi, they should be
I have a 1997 corolla, and the dayco belt part numbers differ by one character.. for 92 belt and 97 belt 95236 and 95036
@@PeterFinnTheCarDoctor thankyou for your reply, sir! Great work on Ur videos by the way very informative.
hi Peter, after a rebuild my engine has some ticking noise in the head, what could it be and what should I do?
Hi, some bearing or valve gap gives sounds.
Do a valve adjustment
My shafts are off about 1/8 of a rotation and will not align. When have I gone wrong?
Please do job again and replace new parts
Thank you sir
Thank You.
What does a 6th generation 1990 Corolla have; timing belt or timing chain
Timing belt
Peter Finn Thanks a million
hey Peter, can you tell me how often a timing chain on a 07 toyota matrix should be changed?
About within every 300 000 miles.
I'm so confused I haven't done any thing yet but I dont know where to start everywhere I see has diffrent instructions on how to do this
Hi Peter, will this work on a 7AFE 1998 180i GLE
Yes
@@PeterFinnTheCarDoctor okay, thank you . I will do it and let you know
Thanks
Hi and Thank You for Your comment. :-) BR Peter
Is this an interference engine?
Yes
Perfect.venezuela
Many Thanks and Great day to You ! Best Regards Peter Finn
How are the camshaft arrangement? Please need a video for camshaft timing for this car
How to time 4af 16v timining
Easy
Can you show me chang oil gear box toyota corolla 2000 thanks
Yes.
Man traductor spanish please i need help me 🙏🙏🙏
Thanks 👍
How much teeth does this belt have
Hi, I need to calculate...
Hi sir, can u show me how to adjust the ignition coil to make the advance and retard state timing of my 4AFE engine, Toyota 16v
Thank You 😀👍
1.3
3k
Thanks for info. 👍