A200 w169

[DawidB]

Car batteling to start intermittently, fitted new crank sensor, new fuel pump, new fuel regulator and relay and crank sensor and sorted throttle body what else can cause this please

 

[ZZZZ]

You really need to get the car plugged into STAR ideally, or at least some capable MB-specific scanner, like iCarsoft MB V2.0, otherwise you'll end up spending money on unnecessary replacements ...

I've an A200 C169 2006 by the way ... with a few mods ...

 

[DawidB]

You really need to get the car plugged into STAR ideally, or at least some capable MB-specific scanner, like iCarsoft MB V2.0, otherwise you'll end up spending money on unnecessary replacements ...

I've an A200 C169 2006 by the way ... with a few mods ...

 

[DawidB]

Thank you i am from south Africa will have to find someone with a star or something, because the Mercedes guy i take it to does have Mercedes diagnostic equipment but cant get this problem sorted its getting a little ke frustrating

 

[ZZZZ]

Get in touch with Forrera - he knows everything there's to know about 168/169/245 cars.
He might be able to help.

 

[DawidB]

Get in touch with Forrera - he knows everything there's to know about 168/169/245 cars.
He might be able to help.

thank you i did contact him

 

[mattkh]

Tell me a bit more about the exact circumstances when it fails to start.

 

[DawidB]

Tell me a bit more about the exact circumstances when it fails to start.

Hi Matt.
It happens in the morning it cranks the engine nicely but it doesnt start in the beginning it happened mostly in the mornings but now it happens often when the car is parked for more than an hour two, but when it starts up its runs lovely no jerking or cutting out or anything like that, the mechanic replaced all of the above it ran very well for a couple of days but now the same story again, i have been told that it could possibly be the non return valve, i am really discouraged at this stage because not only has it cost a pretty penny but it is still not fixed. So yes it cranks up without issues and when it eventually starts runs like a dream

 

[mattkh]

Thanks.
Seems like a fuel pressure issue. Try one thing for me.
Next time you want to start the engine, turn the ignition ON for 20seconds. Turn the ignition OFF.
Then again turn the ignition ON for 20 seconds. Turn the ignition OFF.
Then turn the ignition ON and continue turning the key to fire the engine up.
Please report back.

 

[DawidB]

Thanks.
Seems like a fuel pressure issue. Try one thing for me.
Next time you want to start the engine, turn the ignition ON for 20seconds. Turn the ignition OFF.
Then again turn the ignition ON for 20 seconds. Turn the ignition OFF.
Then turn the ignition ON and continue turning the key to fire the engine up.
Please report back.

Okay thank you will do that sir and will revert

 

[DawidB]

Morning, did as you say and it did crank only but i must say it started easier this time around do you also think it could be non return valve, because it has a brand new pump and fuel relay and regulator and a new crank sensor

 

[mattkh]

First a fuel pressure test would be advisable. There should be a test point on the fuel pressure rail.

 

[DawidB]

First a fuel pressure test would be advisable. There should be a test point on the fuel pressure rail.

Thank you will have it checked out tomorrow