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Cranks but will not start

Tiny
J7161
  • MEMBER
  • 2004 MINI COOPER S
  • 1.6L
  • 4 CYL
  • FWD
  • MANUAL
  • 71,000 MILES
Good afternoon

Thank you for taking the time to read this.

I replaced the fuel filter on my cooper s today. After replacement, the car cranks but will not start. I primed the fuel pump several times and no help. I stripped the filter again and checked installation (all ok)

Primed fuel pump again and still no joy. When the ignition is switched on I can hear the fuel pump in the tank run but it wont fire up?
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Wednesday, October 1st, 2014 AT 9:37 AM

16 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
It sounds like you lost the crankshaft angle sensor lets check for spark to see if the ignition is working here are two guides to help us get started. Here is the sensor location as well in the diagrams below.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

and

https://www.2carpros.com/articles/car-cranks-but-wont-start

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.
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Wednesday, October 1st, 2014 AT 9:58 AM
Tiny
J7161
  • MEMBER
  • 5 POSTS
Good afternoon,

After I re-stripped the filter the first time there was no fuel in the filter at all.

I manually filled the filter to see if that would help and again or didn't start. After this I disconnected the fuel line from the filter to engine at the filter connector and not pressure in the line.

Could it be the fuel pump? Seems strange it was working perfectly before I replaced the filter?
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Wednesday, October 1st, 2014 AT 10:14 AM
Tiny
J7161
  • MEMBER
  • 5 POSTS
Also no pressure at fuel rail obviously
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Wednesday, October 1st, 2014 AT 10:14 AM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Yes, it could be the fuel pump? I was trying to look up info in our database, does the fuel filter sit on top of pump or different tank location? If good voltage and ground at the pump and no clogged lines, then yes, I think the fuel pump is faulty.
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Wednesday, October 1st, 2014 AT 10:29 AM
Tiny
J7161
  • MEMBER
  • 5 POSTS
Thank you.

The fuel pump is in the opposite side to the filter itself so hasn't been touched yet.

What could cause the pump to fail if it was working perfectly prior to the filter replacement?

Would this be the reason why I have no pressure and the filter isn't filling up? I have replaced fuel pumps/filters before and never had an issue. Hence me coming to the experts (you)
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Wednesday, October 1st, 2014 AT 10:41 AM
Tiny
J7161
  • MEMBER
  • 5 POSTS
The car was running perfectly 30 minutes before the filter replacement. I replaced the sensor and it started right up, how can that be?
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Wednesday, October 1st, 2014 AT 10:47 AM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Bad luck mechanics have been dealing with that for the duration. Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help.
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Wednesday, October 1st, 2014 AT 11:27 AM
Tiny
JEFFREYB88
  • MEMBER
  • 4 POSTS
  • 2003 MINI COOPER S
Engine Mechanical problem
2003 Mini Cooper S 4 cyl Two Wheel Drive Manual 94xxx miles

the battery is good.
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Saturday, March 2nd, 2019 AT 1:34 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What is it doing? Is it cranking over and will not start or just won't crank at all/nothing/nada-
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Saturday, March 2nd, 2019 AT 1:34 PM (Merged)
Tiny
JEFFREYB88
  • MEMBER
  • 4 POSTS
When I push in the clutch and turn the key I hear one small click from the engine compartment and then nothing.
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Saturday, March 2nd, 2019 AT 1:34 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Load test the battery if okay double check connections-the following components could cause your problem, starter, starter relay, clutch switch and ignition switch
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Saturday, March 2nd, 2019 AT 1:34 PM (Merged)
Tiny
JEFFREYB88
  • MEMBER
  • 4 POSTS
It started. But I didn't do anything. It sat for a whole day and then it started. I'm thinking this must be an electrical issue. What do you think?
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Saturday, March 2nd, 2019 AT 1:34 PM (Merged)
Tiny
JOYRIDER0012
  • MEMBER
  • 1 POST
  • 2003 MINI COOPER S
  • 54,000 MILES
Hi iv recently had my head gasket replaced on a 03 mini cooper s. The car has been taking a while to fire up once it has fired up its fine. Iv done a compression test and im getting 90, 90, 60, 90. The car is also overheating. Iv also done a fuel and spark check. The car does start now to where it didnt before the head gasket went. What do u think?
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Saturday, March 2nd, 2019 AT 1:34 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
There is something else wrong with that motor the 6- psi is to low, actually the 90 seems on the low side as well. Better have that rechecked.
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Saturday, March 2nd, 2019 AT 1:34 PM (Merged)
Tiny
MRNESQ
  • MEMBER
  • 2 POSTS
  • 2002 MINI COOPER S
  • 4 CYL
  • FWD
  • MANUAL
  • 130,000 MILES
Twice recently when I cut steering hard to right, all electrical went dead and car would not start. After a while will start with a jump and then run fine. Is this a power steering pump short?
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Saturday, March 2nd, 2019 AT 1:34 PM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
There is a TSB regarding the main loom rubbing against the starter heat shield, this has been know to cause this problem, look here first.

Mark (mhpautos)
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Saturday, March 2nd, 2019 AT 1:34 PM (Merged)

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