I have a BMW 745i %2Cit has an issue cranking %2Cit turns over for a while before it starts and theres no set pattern or time limit sometimes it starts right up and other times it takes a while %2Cwhat do you guys think the issue may be%3F

Asked by Jul 09, 2013 at 10:47 PM about the 2005 BMW 7 Series

Question type: Maintenance & Repair

starting or cranking the car engine

2 Answers

21,985

The issue may be that you have not been keeping up on your maintenance- the issue may be that you have not been taking it to a qualified BMW specialist when problems first pop up- your car is a VERY complex piece of machinery- and needs to be supported with a cash sacrifice- the Guru says to prepare yourself for the ceremony of the Golden Cash

4,485

Could be a issue with your fuel pump needing to build up pressure to start the engine. It's called bleeding back. The pump when shut off has a check valve built in to keep the fuel lines primed. When the valve fails it will allow the fuel to bleed back into the tank. The pump then will have to build up fuel pressure when cranking the car. To know if this is the correct issue you will need to check the fuel pressure after letting the car set and when the long crank happens to see what fuel pressure is at should be around 5 bar.

2 of 2 people found this helpful.

Your Answer

Add photo

Related Questions

Search BMW 7 Series Questions

BMW 7 Series Experts

#1 lweems
lweems
Reputation 1,690
#2 Vince Lee
Vince Lee
Reputation 530
#2 Tom Demyan
Tom Demyan
Reputation 530
View All

Related Models For Sale

Used BMW 5 Series
460 Great Deals out of 15,987 listings starting at $1,700
Used Mercedes-Benz S-Class
171 Great Deals out of 6,479 listings starting at $2,700
Used BMW 6 Series
84 Great Deals out of 3,098 listings starting at $6,977
Used Audi A8
38 Great Deals out of 2,024 listings starting at $3,490
Used Mercedes-Benz E-Class
417 Great Deals out of 19,905 listings starting at $699
Used BMW 3 Series
971 Great Deals out of 31,729 listings starting at $1,000
Used Mercedes-Benz CLS-Class
47 Great Deals out of 2,247 listings starting at $6,456
Used BMW X5
436 Great Deals out of 16,995 listings starting at $1,999
Used Land Rover Range Rover
99 Great Deals out of 4,367 listings starting at $3,500
Used Jaguar XJ-Series
46 Great Deals out of 2,699 listings starting at $2,495
Used Dodge Charger
404 Great Deals out of 28,172 listings starting at $1,988
Used Cadillac Escalade
239 Great Deals out of 11,197 listings starting at $2,495
Used BMW M5
20 Great Deals out of 593 listings starting at $10,950

Used Cars For Sale

2017 BMW 7 Series For Sale
8 Great Deals out of 1,577 listings starting at $59,999
2016 BMW 7 Series For Sale
16 Great Deals out of 298 listings starting at $10,735
2015 BMW 7 Series For Sale
17 Great Deals out of 357 listings starting at $26,999
2014 BMW 7 Series For Sale
44 Great Deals out of 862 listings starting at $25,966
2013 BMW 7 Series For Sale
20 Great Deals out of 325 listings starting at $21,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.