26
votes
Accepted
Why do I need to turn my crankshaft after installing a timing belt?
Yes, it's absolutely necessary. As you state, the primary purpose is to check the timing. It is far better to do this by hand and ensure the timing is right rather than to start the engine without it ...
- 157k
12
votes
Accepted
Strange noise from timing belt area
I don't know if I deserve all this credit. My idea was sound, but my measurements were pretty bad so my numbers are way off.
If you try this, use the more precise software that Robert S. Barnes ended ...
- 1,945
9
votes
Accepted
Diesel engine timing?
Diesel engine timing is accomplished through the fuel injectors (they inject fuel at the proper times). Proper timing prevents pre-ignition because there's no fuel in the cylinder yet to ignite. Glow ...
- 4,890
6
votes
Timing belt changed, won't start
On the Honda SOHC V6 engine when doing timing the mark on the crank sprocket should line up with a small arrow on the block @ 12 o'clock.
The bank 2 cam gear should have the cylinder 1 TDC mark ...
- 10.7k
6
votes
Timing belt changed, won't start
quick tip if any one is doing their timing chain or belt. make sure you have a picture showing the tdc( top dead center), double check all the marks match exactly no error is tolerated here, the crank,...
- 1,090
6
votes
Accepted
What RPM to check timing?
There is an annotation on the page 27 entry stating you should follow the special instructions for setting timing. This involves putting the ECU into a special mode. When this happens, set the RPM to ~...
- 157k
5
votes
Timing belt specification
I don't like those "preprinted" marks anyway. You are much better off following the sprocket alignment pictures below.
After the belt is installed and the tensioner properly set, crank the engine ...
- 12.4k
4
votes
Subaru Forester - Timing Belt
Yes, that should fit
O'Reilly's compatibility chart for the Gates TCK304 shows your vehicle under the compatible vehicles. In addition, Amazon's compatibility seems to say the same thing.
Are you ...
- 1,364
4
votes
How do I determine if I am on 1 or 6 at TDC?
Excellent question, at present both pistons (1 and 6) are at Top Dead Centre. You will probably have noted this from the zero timing mark on the harmonic balancer (I assume this is fitted!).
Mate, ...
- 41
4
votes
Accepted
Timing chain issue
If the tensioner has broken in two you'll need to replace it I'm afraid. They aren't mega bucks for those and bodging it back together is just putting a timebomb in place IMHO.
- 10k
4
votes
Lack of power/acceleration
It's possible but extremely unlikely that the timing belt is the culprit to a power loss. The timing belt (or chain in some cases) synchronizes the movement of the pistons and valves in the engine. ...
- 16.9k
4
votes
Timing sounds off, how do I confirm this?
When changing the timing belt, it is the valve timing that can become displaced if the belt is not put back in the correct position. To accurately check this is a simple visual check. However, to do ...
- 25.2k
3
votes
Strange noise from timing belt area
This is a bit of a shot in the dark, but I'm going to point my finger at the tensioner spring. To me, the sound in the video is very... dull. Kind of thudy for lack of a better term. It sound like one ...
- 3,264
3
votes
Strange noise from timing belt area
well you either have bad bearings in your tensioner or a really fast telegraph operator in there.
Change out that tensioner and its springs which is what should almost always be done when changing ...
- 2,879
3
votes
Accepted
Properly Aligning My Timing Marks
When you check the timing previously, you may have noticed the marks being slightly off because some belt stretch.
Install the new belt according to the manual (even with the head is very common) ...
- 9,015
3
votes
4 stroke valve timing diagram: if valves are open during TDC, wouldn't they hit the piston?
Question 1: This depends on engine design.
In an interference engine, the valves can collide with the pistons, so you need to design the timing diagram to prevent that.
In non-interference engines, ...
- 4,412
3
votes
Motorcycle: fuel and spark but no ignition?
With a no-run scenario, think FASTEC:
Fuel
You've confirmed delivery, but the resultant mixture could be too rich or too lean for the engine to run
Air
Ditto on the reason: air-fuel ratios matter. ...
- 39.1k
3
votes
How to time a 2001 Saturn 2.2liter DOHC?
When you shut off the car the cams can rotate counterclockwise due to spring tension. This compresses the tensioner and if there's too much play in the chain it jumps timing.
When you installed the ...
- 10.7k
2
votes
Why would a water pump be run off of the timing belt?
Having snapped alternator and water pump belts in the past, I feel the most likely reason is engine safety. If it's a non-interference engine, having the timing belt drive the water pump ensures that ...
- 1,935
2
votes
97 manual ford ranger throwing a camshaft position sensor code
P0340 is a Camshaft Sensor "A" Circuit Bank 1 code. This could be either a wiring issue, sensor failure, or camshaft/crankshaft timing issue.
Since you've replaced the timing belt, computer and ...
- 10.7k
2
votes
How to determine TDC after bottom end rebuild?
don't do what you said to do you could smash valves or possibly cause fires ... bad things might / will happen. Get your cams and crank lined up first before spinning anything much less firing the ...
- 2,879
2
votes
How do I determine if I am on 1 or 6 at TDC?
You want the top of the compression stroke, so if you can put your finger (or thumb) on the spark plug hole of cylinder #1, you can run your piston up to top dead center. If you feel the air being ...
- 157k
2
votes
How much can sub-optimal octane affect efficiency or power?
It's obviously not like: 10% lower octane is 10% less timing advance, 10% less power, and 10% more fuel consumption. I don't think it's even possible to calculate beforehand how much you will benefit ...
- 2,954
2
votes
How much can sub-optimal octane affect efficiency or power?
I can't tell about precise numbers, but have some experience with my cars and multiple gas types usage: if a lower octane is used in an engine tuned for higher octanes, the engine looses power a lot. ...
- 3,336
2
votes
High vacuum pressure on idle after timing gear and chain replacement
First, verify the vacuum gauge and the port you are connecting to. 5in is very low vacuum and I suspect the car would idle like crap.
Vacuum is produced by the engine efficiently trying to pump air ...
- 91
2
votes
proper time for changing timing belt
The condition of a rubber timing belt will deteriorate both through wear during use and through exposure to the elements (temperature cycles, salt, rain etc) which is why both the mileage and the age ...
- 10k
2
votes
1600cc VW Aircooled Engine Backfires with no power when hot
This engine can be prone to detonation, which can be aggravated by lean mixture and hot spots in the cylinder. I would check out timing as well.
If that is not the issue, then I would be looking at ...
- 2,115
2
votes
2011 f150 ecoboost timing chain and valve train
Mitchell shows 12.3 hours for the timing set and an additional 1.6 hours to R&R the cams on both banks. Probably add a half hour to R&R the vct solenoids. The actuators are figured into the 12....
- 10.7k
2
votes
Accepted
Does the number of teeth on a reluctor wheel matter? (crank position)
It somewhat depends on what the crank position information is used for.
60 would be better than 36, as the former only has 10 degrees of resolution, while the latter "60 tooth" improves this to 6 ...
- 12.4k
2
votes
Setting distributor correctly
Best option is to remove spark plug from #1 cylinder and turn over the engine while your finger is in the spark plug hole, when you feel the compression pushing your finger out that is the compression ...
- 7,990
Only top scored, non community-wiki answers of a minimum length are eligible