V6 screw up

jens_munk · 7th June 2018, 18:49

This is bad. I have just been trough the challenge of replacing the timing belts on my 1999 2.0 V6 all being very careful with the lock pin being in place all the time, marks here and there, turning it several times by hand after the replacement to ensure everything lines up as before.

Now that I start it up it runs on max 5 cylinders and there is also a ticking noise. Kind of like some valves being stuck open. I had a look into the front three cylinders with a snake cam, and there were no marks or debris.

What have I done wrong? It is ready for the junk yard? I am so tired of it.

Thanks,

Jens.

kaiser · 8th June 2018, 02:33

Have you checked for spark, and fuel.?
Get some fault codes.
You haven't broken a cam?

Be sure, if it turns by hand and pin has been in throughout, you won't have a bent valve>

Get codes find cylinder, concentrate on wire, spark plug, coil, injector.

Som sagt mange gange foer, ikke verdens bedste motor!

jens_munk · 8th June 2018, 05:43

I forgot to mention that: No fault codes.

However, I removed the crank pulled as suggested in the Haynes manual by putting it in 5th gear and the wife pressing the brake pedal hard to hold it. It was hard to get out and I wonder if the crank could have been damaged?

Quote:

Originally Posted by kaiser

Have you checked for spark, and fuel.?
Get some fault codes.
You haven't broken a cam?

Be sure, if it turns by hand and pin has been in throughout, you won't have a bent valve>

Get codes find cylinder, concentrate on wire, spark plug, coil, injector.

Som sagt mange gange foer, ikke verdens bedste motor!

kaiser · 8th June 2018, 05:57

The crank could not be damaged from that, guaranteed.!
Use a better scan tool, there must be a code if you have a misfire.

jens_munk · 8th June 2018, 06:52

On thing I do remember was that the notch on the crank timing belt sprocket was not straight up but a little counter clockwise with the locking pin in place. I didn't touch it, but upon reflection shouldn't it be that?

kaiser · 8th June 2018, 07:43

A short answer: No
I think it is related to the belt change, somehow, but I don't think it would be timing related.
What scanner did you use?
Have you tested all coils, even those difficult to get at?
Have you checked spark plugs.?
Done compression testing?
Is (are) your manifold(s) on tight, no leaks?
Tested spark plug leads?

If you don't get a fault code, then proceed as follows:

Run engine and remove one spark plug lead at a time, until you find the culprit. You can hear it, because the revs will not be affected, when you pull the plug to the offending cylinder.

When you have the offending cylinder, do a compression test first, which will quickly tell you if there is a bent valve. If compression is OK, you look for spark and/or fuel.

Let us know

7th June 2018, 18:49	#1
jens_munk Newbie Rover 75 Saloon Join Date: Jul 2016 Location: Odense Posts: 29 Thanks: 0 Thanked 0 Times in 0 Posts	V6 screw up This is bad. I have just been trough the challenge of replacing the timing belts on my 1999 2.0 V6 all being very careful with the lock pin being in place all the time, marks here and there, turning it several times by hand after the replacement to ensure everything lines up as before. Now that I start it up it runs on max 5 cylinders and there is also a ticking noise. Kind of like some valves being stuck open. I had a look into the front three cylinders with a snake cam, and there were no marks or debris. What have I done wrong? It is ready for the junk yard? I am so tired of it. Thanks, Jens.

8th June 2018, 02:33	#2
kaiser This is my second home 75 Tourer 2.5 Auto, 1.8T, 75V8ZT Join Date: Jun 2007 Location: Johannesburg ZA Posts: 6,200 Thanks: 1 Thanked 859 Times in 613 Posts	Have you checked for spark, and fuel.? Get some fault codes. You haven't broken a cam? Be sure, if it turns by hand and pin has been in throughout, you won't have a bent valve> Get codes find cylinder, concentrate on wire, spark plug, coil, injector. Som sagt mange gange foer, ikke verdens bedste motor! __________________ Worth his V8 in gold

8th June 2018, 05:57	#4
kaiser This is my second home 75 Tourer 2.5 Auto, 1.8T, 75V8ZT Join Date: Jun 2007 Location: Johannesburg ZA Posts: 6,200 Thanks: 1 Thanked 859 Times in 613 Posts	The crank could not be damaged from that, guaranteed.! Use a better scan tool, there must be a code if you have a misfire. __________________ Worth his V8 in gold

8th June 2018, 07:43	#6
kaiser This is my second home 75 Tourer 2.5 Auto, 1.8T, 75V8ZT Join Date: Jun 2007 Location: Johannesburg ZA Posts: 6,200 Thanks: 1 Thanked 859 Times in 613 Posts	A short answer: No I think it is related to the belt change, somehow, but I don't think it would be timing related. What scanner did you use? Have you tested all coils, even those difficult to get at? Have you checked spark plugs.? Done compression testing? Is (are) your manifold(s) on tight, no leaks? Tested spark plug leads? If you don't get a fault code, then proceed as follows: Run engine and remove one spark plug lead at a time, until you find the culprit. You can hear it, because the revs will not be affected, when you pull the plug to the offending cylinder. When you have the offending cylinder, do a compression test first, which will quickly tell you if there is a bent valve. If compression is OK, you look for spark and/or fuel. Let us know __________________ Worth his V8 in gold

8th June 2018, 06:52	#5
jens_munk Newbie Rover 75 Saloon Join Date: Jul 2016 Location: Odense Posts: 29 Thanks: 0 Thanked 0 Times in 0 Posts	On thing I do remember was that the notch on the crank timing belt sprocket was not straight up but a little counter clockwise with the locking pin in place. I didn't touch it, but upon reflection shouldn't it be that?