One Problem Solved....and Another

[westytwo]

Hello all,

 

About a month ago I resolved my boosting / power loss problem. It turned out to be the small pipe inside the ECU which had become brittle. After this was fixed it was like driving a different car and I no longer had the issue of artics overtaking me on hills. However I recently had the car MOT'd since this has been done the engine is very noisy compared to before, it now sounds like an early 90's Transit and again I have no power, just before the MOT the galaxy had just done a 4 hour drive back from Cornwall. I have heard that when diesels are MOT,d they have to be revved hard prior to the emissions test being done is this true and if so is it possible that the timing belt may have slipped a tooth which is causing the problem? The cambelt was replaced about 10000 miles ago. I have also noticed that if you hold the revs at around 2000rpm you can see lots of air bubbles travelling through the clear fuel pipe is this normal? I replaced the diesel filter and rubber O ring less than a month ago. The galaxy is a 110 bhp afn engine.

[chrispb123456]

Hello all,

 

About a month ago I resolved my boosting / power loss problem. It turned out to be the small pipe inside the ECU which had become brittle. After this was fixed it was like driving a different car and I no longer had the issue of artics overtaking me on hills. However I recently had the car MOT'd since this has been done the engine is very noisy compared to before, it now sounds like an early 90's Transit and again I have no power, just before the MOT the galaxy had just done a 4 hour drive back from Cornwall. I have heard that when diesels are MOT,d they have to be revved hard prior to the emissions test being done is this true and if so is it possible that the timing belt may have slipped a tooth which is causing the problem? The cambelt was replaced about 10000 miles ago. I have also noticed that if you hold the revs at around 2000rpm you can see lots of air bubbles travelling through the clear fuel pipe is this normal? I replaced the diesel filter and rubber O ring less than a month ago. The galaxy is a 110 bhp afn engine.

They usually rev them up hard if they had a high reading or if its been ticking over for a long period the actual test only requires one rev up to 4000 then release not hold it there if its borderline may need to repeat.

My local MOT station has a disclaimer warning that it is owners responsibility to ensure cambelt is in good condition and oil level correct before having smoke test.

If the belt has only done 10000 I would firstly check the tension on that belt as this is quite critical, if its been fitted to loose it will strip or jump teeth, if its to tight it will whine.

Is the bubbles in the line from the tank or the return?

[Jayton]

Do as Chris says and check the timing belt tension.

 

I wouldn't worry too much about the bubbles in the fuel line.

 

My GTD had them when I was investigating sudden power loss problems and I was told diesels don't like air in the fuel lines... turns out VW engines cope well with the air and bleed it out. It even cost me a few hours extra labour as I told the mechanic's about the air being the possible cause... turned out to be a loose cable shutting down the fuel pump randomly :)

 

Do you have access to VAGCOM to check for any errors?

[westytwo]

Hello all,

 

About a month ago I resolved my boosting / power loss problem. It turned out to be the small pipe inside the ECU which had become brittle. After this was fixed it was like driving a different car and I no longer had the issue of artics overtaking me on hills. However I recently had the car MOT'd since this has been done the engine is very noisy compared to before, it now sounds like an early 90's Transit and again I have no power, just before the MOT the galaxy had just done a 4 hour drive back from Cornwall. I have heard that when diesels are MOT,d they have to be revved hard prior to the emissions test being done is this true and if so is it possible that the timing belt may have slipped a tooth which is causing the problem? The cambelt was replaced about 10000 miles ago. I have also noticed that if you hold the revs at around 2000rpm you can see lots of air bubbles travelling through the clear fuel pipe is this normal? I replaced the diesel filter and rubber O ring less than a month ago. The galaxy is a 110 bhp afn engine.

They usually rev them up hard if they had a high reading or if its been ticking over for a long period the actual test only requires one rev up to 4000 then release not hold it there if its borderline may need to repeat.

My local MOT station has a disclaimer warning that it is owners responsibility to ensure cambelt is in good condition and oil level correct before having smoke test.

If the belt has only done 10000 I would firstly check the tension on that belt as this is quite critical, if its been fitted to loose it will strip or jump teeth, if its to tight it will whine.

Is the bubbles in the line from the tank or the return?

 

The bubbles are definetely coming from the tank. I have checked the fuel line from the tank and it does not appear to have any drips, I would have thought that if the fuel pump can suck air in through a crack while the engine is on, then diesel would seap out when the engine is off wouldn't it?????

[westytwo]

Do as Chris says and check the timing belt tension.

 

I wouldn't worry too much about the bubbles in the fuel line.

 

My GTD had them when I was investigating sudden power loss problems and I was told diesels don't like air in the fuel lines... turns out VW engines cope well with the air and bleed it out. It even cost me a few hours extra labour as I told the mechanic's about the air being the possible cause... turned out to be a loose cable shutting down the fuel pump randomly :)

 

Do you have access to VAGCOM to check for any errors?

 

 

No I have not got a VAGCOM lead yet, gonna get one off ebay. Any ideas which lead I need? Is checking the timing much of a job? I changed a cambelt on a VW Caddy once and it was never the same again LOL!!!

[chrispb123456]

here is a link to changing the belt which includes timing

scroll down till you reach the page

http://www.fordgalaxy.org.uk/ford/index.ph...c=6705&st=0