Z4 E85 3.0 - 2005 - will not start!
- Thread starter knmstag
- Start date
Thanks again for your support, suggestions and shares experiences. A local auto key specialist has tested both keys in his workshop, and kindly visited the Z4 at my son’s house today in Burton. The keys are OK, and not cause of problem...keys & ECW box have been tested by locksmith using electronic device.
We have ensured engine is not seized, by turning the crank with a socket & extension bar.
We are going to buy a new/remanufactured starter motor and try that later this week. I had assumed starter motor was OK, as it worked on the bench, but I now uncertain, as a couple of comments on forum suggest it may be an intermittent fault, and may not work under load on the car.
We appreciate your help!
We have ensured engine is not seized, by turning the crank with a socket & extension bar.
We are going to buy a new/remanufactured starter motor and try that later this week. I had assumed starter motor was OK, as it worked on the bench, but I now uncertain, as a couple of comments on forum suggest it may be an intermittent fault, and may not work under load on the car.
We appreciate your help!
knmstag said:Thanks again for your support, suggestions and shares experiences. A local auto key specialist has tested both keys in his workshop, and kindly visited the Z4 at my son’s house today in Burton. The keys are OK, and not cause of problem...keys & ECW box have been tested by locksmith using electronic device.
We have ensured engine is not seized, by turning the crank with a socket & extension bar.
We are going to buy a new/remanufactured starter motor and try that later this week. I had assumed starter motor was OK, as it worked on the bench, but I now uncertain, as a couple of comments on forum suggest it may be an intermittent fault, and may not work under load on the car.
We appreciate your help!
Keep us posted bud- will help us all learn
Well this is turning into a saga, and gutted we can't help.knmstag said:Thanks again for your support, suggestions and shares experiences. A local auto key specialist has tested both keys in his workshop, and kindly visited the Z4 at my son’s house today in Burton. The keys are OK, and not cause of problem...keys & ECW box have been tested by locksmith using electronic device.
We have ensured engine is not seized, by turning the crank with a socket & extension bar.
We are going to buy a new/remanufactured starter motor and try that later this week. I had assumed starter motor was OK, as it worked on the bench, but I now uncertain, as a couple of comments on forum suggest it may be an intermittent fault, and may not work under load on the car.
We appreciate your help!
Finger crossed you get it sorted soon.
I fitted a new starter motor today!
The good news is that engine is now cranking, and sounds promising...however car still will not start!
I removed the spark plugs, expecting them to be soaked with fuel, but they were all bone dry!
The plugs were in poor condition and should have been replaced long ago. It still would not fire up!
I can only assume it’s now a fuel starvation problem.
I don’t understand why this has developed, since the starter motor failure. Any further suggestions to resolve this saga please? Do I need to consider fuel pump & filter? - which is likely to be very awkward to access...
Thanks for your continued help.
Kevin Murray
The good news is that engine is now cranking, and sounds promising...however car still will not start!
I removed the spark plugs, expecting them to be soaked with fuel, but they were all bone dry!
The plugs were in poor condition and should have been replaced long ago. It still would not fire up!
I can only assume it’s now a fuel starvation problem.
I don’t understand why this has developed, since the starter motor failure. Any further suggestions to resolve this saga please? Do I need to consider fuel pump & filter? - which is likely to be very awkward to access...
Thanks for your continued help.
Kevin Murray
Did you check for spark at the plugs when you removed them now the starter is cranking?
If you have spark then fuel pump fuse will be next to check as suggested above. Code read it again to see if there is anything else showing up, thinking camshaft sensor and or crankshaft sensor gone bad.
If you have spark then fuel pump fuse will be next to check as suggested above. Code read it again to see if there is anything else showing up, thinking camshaft sensor and or crankshaft sensor gone bad.
Good afternoon all,
I have just replaced the crank sensor and car still refuses to start! I have checked the fuel at Schrader valve on fuel rail and there is a healthy spurt of fuel ejected when pressed wit a screwdriver,
However there is no spark or fuel at plugs.
The fuel pump can be heard to prime when ignition key is turned to first position. That’s encouraging...
To recap, starter motor was replaced with a new one and car is now cranking well, but no a splutter of combustion.
Alternator, ignition keys, EWS unit have all been checked out. There is plenty of fuel in the tank.
I’m baffled and running out of potential solutions.
Sorry to keep having to ask, but I would appreciate an further suggestions.
Regards,
Kevin
I have just replaced the crank sensor and car still refuses to start! I have checked the fuel at Schrader valve on fuel rail and there is a healthy spurt of fuel ejected when pressed wit a screwdriver,
However there is no spark or fuel at plugs.
The fuel pump can be heard to prime when ignition key is turned to first position. That’s encouraging...
To recap, starter motor was replaced with a new one and car is now cranking well, but no a splutter of combustion.
Alternator, ignition keys, EWS unit have all been checked out. There is plenty of fuel in the tank.
I’m baffled and running out of potential solutions.
Sorry to keep having to ask, but I would appreciate an further suggestions.
Regards,
Kevin
I have not checked the new spark plugs for spark. Old were were in very poor condition, as should have been replaced long ago.
Can I check for spark at plug in conventional way, by positioning electrode onto body earth point, the cranking engine, obviously with coil pack and wiring attached? - I've not worked on recessed plug types (with coil pack) before. However all plugs were dry, not wet with fuel...
Can I check for spark at plug in conventional way, by positioning electrode onto body earth point, the cranking engine, obviously with coil pack and wiring attached? - I've not worked on recessed plug types (with coil pack) before. However all plugs were dry, not wet with fuel...
Test for fuel at the schrader valve, remove the cover over the inlet manifold and it's the valve nearest you on top of the rail. Press it with small screw driver with the engine off. You won't have a gauge so can't test it running, but if there is no fuel spray at all then that's probably your problem. To test for a spark remove coil and plug, reconnect plug in coil and get someone to turn engine over as you said, wear rubber gloves unless you want a shock, coil packs can pack a punch.
I am at home in Coventry. Car is at my son’s in Burton (40 miles away) I plan to visit this weekend, and try a few further checks. The crank sensor may have been disturbed or damaged whilst removing & fitting the starter motor.
I want to also check the fuel pump relay, when I can locate it! I will also carry out a check on the fuel rail at the Schader valve, as suggested. I believe there is a fuel starvation issues, but need to discover the root cause.
Thanks for your continued support.
Kevin
I want to also check the fuel pump relay, when I can locate it! I will also carry out a check on the fuel rail at the Schader valve, as suggested. I believe there is a fuel starvation issues, but need to discover the root cause.
Thanks for your continued support.
Kevin
