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Old 01-06-2008, 05:16 PM   #1
darkis_light
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Warm engine start

My 1991 e30 318is was having a problem when starting after it had been parked with the engine hot for more than 15-20 mins.

Symptoms were as if it had no fuel in the line. Cranked over 6-8 times and then stumble and start and run fine.

I did research on the internet and found that similar problems had been posted on other BMW websites. see: http://www.bmwe34.net/E34main/Trouble/535ihot_start.asp

I never checked with BMW in Canada for availability.

Note: The repair kit is inexpensive but costs more than its worth in shipping.
Bulky packaging. Kit consists of the replacement fuel line with the check valve already attached (you will cut this to length for your application) and some new clamps (crimped type clamps you may wish to replace with screw type clamps) and some insulation tubing and plastic nut covers (this can be discarded as you may not use this for your repair)

I finally had enough and I purchased BMW check valve p/n 16149068988 from Steve Haygood in the states. You can see his site at http://www.stevehaygood.com:80/





Pre install



Post install



Car starts without hesitation now!!!!
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Old 01-06-2008, 08:16 PM   #2
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Important Note: Do this outside not in the garage!!!!
Very simple. Disconnect the fuel pump power supply and fuel sender connectors. Takes 30min, just have everything ready, Clamps, tools, fire extinguisher and pre cut the fuel hose before you disconnect the feed line.

Be prepared for some fuel to leak back down towards the fuel pump, have some rags handy.
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Old 01-06-2008, 08:37 PM   #3
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Ahhhh...My old swap car (a 91' 318i shell) had the same problem too. Cool to know what it finally was!
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Old 01-06-2008, 09:10 PM   #4
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Thank you very much for this thread. I'm having the exact same problem with my 325is. Worth a try.
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Old 01-09-2008, 12:05 PM   #5
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LOL now heres a question. How bout if your car runs perfectly fine... BUT you WANT to make it crank longer?? More less what I am asking is how to artificially make this problem?
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Old 01-09-2008, 03:30 PM   #6
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Install a manual switch to shut off your fuel pump so you can crank as long as you want.

Why would you want to artificially create this problem?
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Old 01-09-2008, 10:44 PM   #7
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I think it would be better to cut the power to the coil instead of cutting the fuel... but meh, different ways about going at it...

Why? I dunno... I just feel bad in the morning seeing my car running for a split second with the oil pressure light on. I'd crank it longer so it builds oil pressure... It was just a thought of mine that if my car develops this fuel problem that I will not fix it. lol.
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Old 01-12-2008, 04:12 PM   #8
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I'm having this problem as well. The thing is that sometimes it didn't want to start even on the cold start. Happened only once. I still haven't figured it out but everytime i pull the sparkplugs out, they are soaked in fuel.
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Old 01-12-2008, 05:43 PM   #9
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Quote:
Originally Posted by craz azn View Post
I just feel bad in the morning seeing my car running for a split second with the oil pressure light on.
If she's running and the oil light is on then maybe you have an oil pressure problem or a bad oil pressure pressure sensor.
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Old 01-12-2008, 05:44 PM   #10
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Quote:
Originally Posted by Ej_Red View Post
I'm having this problem as well. The thing is that sometimes it didn't want to start even on the cold start. Happened only once. I still haven't figured it out but everytime i pull the sparkplugs out, they are soaked in fuel.

Are your plugs wet on the warm start or just the cold start?
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Old 01-12-2008, 07:26 PM   #11
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I have never pulled the plugs out on the warm start cause it would usually start after very long cranking. Once in the morning the car was cold and it started fine ran about a minute and i shut it off. It wouldn't restart after. Pulled spark plugs out, soaked wet after long cranking. Now the other day it wouldn't start at all and it was really wet outside/rain. It wouldn't start at all. So after the cranking i pulled the spark plugs out, they were wet. Dried them out with the heat gun, put them back in and stepped on the gas pedal and it started right away. I suspect leaking injectors maybe? Or something in the ignition system.
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Old 01-12-2008, 08:43 PM   #12
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Wet plugs would generally indicate a spark problem.
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Old 01-12-2008, 09:20 PM   #13
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Quote:
Originally Posted by darkis_light View Post
If she's running and the oil light is on then maybe you have an oil pressure problem or a bad oil pressure pressure sensor.
Nope. Its fine. New sensor last year. And theres no problem with the pump as it was just cracked apart 13k ago and looked brand new (came from a low km engine) I am pretty sure every car is like that on a cold day.
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Old 01-12-2008, 10:09 PM   #14
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Haven't seen that on mine. 352,000Km running 5W 30 Quaker state synthetic all winter and Castrol 20W 50 in the summer.
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Old 01-12-2008, 10:11 PM   #15
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5w30 is rather thin for the m20

im runnin' 10w40 in the winter
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