Bentley Continental gt HELP!!!
Discussion
My boss has a bentley continental gt that has a certain issue with starting so to describe it i will do my best
The car cranks and fires but then dies it does this around 3 times before settling down and runs on tick over
When I had a look at the car for him I noticed that one of the breather flaps wasn't opening (little round disc about 6 inch into the exhaust tip) also at the same side but under the bonnet at the front when reved their was a bloom of white smoke which then settled once the car was warm
My first thought could of been the fuel pump but now I'm wondering if it's the sensor attached to the exhaust flaps
As a side note there are no warning lamps on the dash other then tyre pressure
Has anyone else experienced anything like this or diagnosed the issue and fixed it.
Thanks for your help in advance.
The car cranks and fires but then dies it does this around 3 times before settling down and runs on tick over
When I had a look at the car for him I noticed that one of the breather flaps wasn't opening (little round disc about 6 inch into the exhaust tip) also at the same side but under the bonnet at the front when reved their was a bloom of white smoke which then settled once the car was warm
My first thought could of been the fuel pump but now I'm wondering if it's the sensor attached to the exhaust flaps
As a side note there are no warning lamps on the dash other then tyre pressure
Has anyone else experienced anything like this or diagnosed the issue and fixed it.
Thanks for your help in advance.
You really need to get a proper code reader on it rather than guessing. Only then if there are no codes should you start to think out of the box.
But even then I would be trying to look at the live data during the failed cranks to see if fuel pressure builds etc.
It could also be a combination of issues. From what you say it could be vac leak, evap valve, leaking gaskets etc.
But the white smoke is also unusual, so you could even have a cylinder filling with oil / coolant overnight..... eek.
But even then I would be trying to look at the live data during the failed cranks to see if fuel pressure builds etc.
It could also be a combination of issues. From what you say it could be vac leak, evap valve, leaking gaskets etc.
But the white smoke is also unusual, so you could even have a cylinder filling with oil / coolant overnight..... eek.
First question - why on earth are you posting on here??? If its your boss's car, are you hoping to actually fix it for him? For nothing? Or are you a sophisticated carrier pigeon?
Anyway, onto the "issue". You have no direction here. I believe the exhaust flap is a red herring. I believe you don't know what the purpose of the exhaust flap is, or its control inputs.
The white smoke - is a secondary concern for now. I'd focus on one thing, why it dies 3 times.
But you need direction. I'd suggest you get a PROPER code reader on it, for starters. Then record EVERY fault code. Then clear the codes. Then start the car, re-scan, and keep detailed records for every "new" code generated (probably a subset of those existing, but there might be new ones too).
Then for every fault code, look up, properly, on a reliable information system, the code setting criteria. You won't get this information from posting on a general forum; and you'll get led down blind alleys posting on a marque-specific forum because its a lot of information to digest and you'll just get people saying "I had this fault and xxxxx fixed it".
DO NOT load up the parts cannon. On a car like a Bentley, you can waste a lot of time and money replacing things that don't need replacing.
That's only for starters. Also look at the basics - do a proper visual inspection of the engine bay area. Of course, you need to know what you're looking for. Look at fuelling, look at ignition timing (on live data), maybe do a cranking current draw test (you do have a scope, right?) as an indirect way of assessing cylinder compression.
It will be something simple but in a sea of about 10000 things it could be. Or it could be something more complicated, expensive, unobtainable, difficult to replace requiring much disassembly and reassembly of other stuff, or it could be multiple problems.
Anyway, onto the "issue". You have no direction here. I believe the exhaust flap is a red herring. I believe you don't know what the purpose of the exhaust flap is, or its control inputs.
The white smoke - is a secondary concern for now. I'd focus on one thing, why it dies 3 times.
But you need direction. I'd suggest you get a PROPER code reader on it, for starters. Then record EVERY fault code. Then clear the codes. Then start the car, re-scan, and keep detailed records for every "new" code generated (probably a subset of those existing, but there might be new ones too).
Then for every fault code, look up, properly, on a reliable information system, the code setting criteria. You won't get this information from posting on a general forum; and you'll get led down blind alleys posting on a marque-specific forum because its a lot of information to digest and you'll just get people saying "I had this fault and xxxxx fixed it".
DO NOT load up the parts cannon. On a car like a Bentley, you can waste a lot of time and money replacing things that don't need replacing.
That's only for starters. Also look at the basics - do a proper visual inspection of the engine bay area. Of course, you need to know what you're looking for. Look at fuelling, look at ignition timing (on live data), maybe do a cranking current draw test (you do have a scope, right?) as an indirect way of assessing cylinder compression.
It will be something simple but in a sea of about 10000 things it could be. Or it could be something more complicated, expensive, unobtainable, difficult to replace requiring much disassembly and reassembly of other stuff, or it could be multiple problems.
The reason I'm posting for my boss is because he is s
t with technology so I said if he posts all the issues on a forum somebody else my have experienced the same sort of issue so it may make it cheaper if he can get clarification or a diagnosis on the issues as alot of garages close to us won't touch them sort of cars
Am I hoping to fix it not a chance have I posted the issues he has experienced yes did I give my opinion on what I thought the starting issues yes
I personally would never buy this sort of car for the price he did as it was far to cheap not to have any issues but all I am doing g is expressing the problems he has asked me to so I can potentially give him an idea of what it maybe as I k ow there is some very knowledgeable people on here
t with technology so I said if he posts all the issues on a forum somebody else my have experienced the same sort of issue so it may make it cheaper if he can get clarification or a diagnosis on the issues as alot of garages close to us won't touch them sort of cars Am I hoping to fix it not a chance have I posted the issues he has experienced yes did I give my opinion on what I thought the starting issues yes
I personally would never buy this sort of car for the price he did as it was far to cheap not to have any issues but all I am doing g is expressing the problems he has asked me to so I can potentially give him an idea of what it maybe as I k ow there is some very knowledgeable people on here
gotoPzero said:
You really need to get a proper code reader on it rather than guessing. Only then if there are no codes should you start to think out of the box.
But even then I would be trying to look at the live data during the failed cranks to see if fuel pressure builds etc.
It could also be a combination of issues. From what you say it could be vac leak, evap valve, leaking gaskets etc.
But the white smoke is also unusual, so you could even have a cylinder filling with oil / coolant overnight..... eek.
I've said to him that he needs a proper scanner on it not the cheap £40 amazon ones as they do nothing reallyBut even then I would be trying to look at the live data during the failed cranks to see if fuel pressure builds etc.
It could also be a combination of issues. From what you say it could be vac leak, evap valve, leaking gaskets etc.
But the white smoke is also unusual, so you could even have a cylinder filling with oil / coolant overnight..... eek.
As you are clearly aware OP your boss bought a previously expensive car cheap. Unfortunately as is evidenced here and all over the internet old Bentleys cost the same to repair as new ones without the buffer of warranties. I would suggest he either gets a code reader or finds someone willing to work on it for a reasonable amount who has one.
This thread shows the danger of asking random strangers on a web forum about a car such as the CGT.
The comment above “I believe the exhaust flap is a red herring” is typical of a well-meaning but uninformed armchair expert.
On the CGT, the exhaust flaps are activated by the same vacuum supply that is used to control various other actuators around the engine.
On the early CGT the vacuum pipes are the source of great consternation, and to fix the problem requires the engine and transmission to be removed. (I’ve done it to my car so I’m well versed in the task).
An easy check is to listen in the (RHD) passenger wheel arch for the sound of the vacuum pump which should be heard only occasionally. If it runs every time that the brake pedal is pressed, then that’s the problem.
Regarding diagnosis: either Ross Tech VCDS at £225, or a hooky copy of VW’s ODIS for rather less, are the only sensible choices to inform proper diagnosis.
The comment above “I believe the exhaust flap is a red herring” is typical of a well-meaning but uninformed armchair expert.
On the CGT, the exhaust flaps are activated by the same vacuum supply that is used to control various other actuators around the engine.
On the early CGT the vacuum pipes are the source of great consternation, and to fix the problem requires the engine and transmission to be removed. (I’ve done it to my car so I’m well versed in the task).
An easy check is to listen in the (RHD) passenger wheel arch for the sound of the vacuum pump which should be heard only occasionally. If it runs every time that the brake pedal is pressed, then that’s the problem.
Regarding diagnosis: either Ross Tech VCDS at £225, or a hooky copy of VW’s ODIS for rather less, are the only sensible choices to inform proper diagnosis.
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