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Old 06-12-2019, 03:48 AM   #1
Andresmam
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Bmw E46 from 1992 spark plug?

Hi, I have a BMW E46.

Last week the car has been slower than usual and takes little more time to start, Today It took me 5 minutes to just start the car, I turn the key and it sound brmmm brmmmm brmmm but enginge never "starts" until after a few tries

My question is could it be the spark plug, we call it "tändstift" in sweden so I hope this would be the right photo of what I mean

Photo source (borrow) from carblog https://www.abswheels.se/blog/

hhhhh this month has only given me problems

Last edited by Andresmam; 06-12-2019 at 06:14 AM. Reason: adding photo source
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Old 06-12-2019, 04:59 AM   #2
alan53
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Your question suggests a lack of maintenance so yes 6 times for that,followed by replace all consumables and cooling system,however your battery seems good is it new?
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Old 06-12-2019, 05:31 AM   #3
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I'm not sure if you're asking about a '92 E36 or an E46 with old spark plugs...but, as suggested above, it could be a maintenance issue.

It could be many things, including clogged fuel filter or soft-failing fuel pump. How many miles...how long have you had the car and what maintenance have you done already? Have you looked at your air filter, changed the oil or know when it was changed last?

Honestly, it probably isn't the plugs, but in the e46, they should be changed every 100,000 miles (if you use the proper plug).

Get a code reader or get your codes read and report them here when you can--that will help you save a lot of time and possibly money in the long run. A $20 thing that plugs into the obdII port and a cell phone app for $5 is all you need.

...and realoem.com is a great site for finding every part number on your car--also helpful.

Good luck.
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Old 06-12-2019, 06:13 AM   #4
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Its the E36, thanks guys realy thank you soo much for the information. I think I should go to the car mechanics :/
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Old 06-12-2019, 06:15 AM   #5
Andresmam
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Quote:
Originally Posted by alan53 View Post
Your question suggests a lack of maintenance so yes 6 times for that,followed by replace all consumables and cooling system,however your battery seems good is it new?
The battery is new, thats the strangest part
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Old 06-17-2019, 09:03 PM   #6
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If it's an e36 I'm pretty sure the European ones don't have the OBDII port for the scanners we use. Maybe the 20 port under the hood that the Peaked tool fits. Otherwise there is the stomp test for OBDI cars, but I don't know if that works on European spec cars.
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Old 06-18-2019, 01:13 AM   #7
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jmo69, ok thanks man I will check that
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Old 06-18-2019, 07:29 AM   #8
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There is a "pac-man" connector under the hood on these cars but it does not run the OBD-2 protocol, it runs a protocol called ADS and need a special adapter. The one that I use is sold here as a board, or here as a complete cable (serial to pac-man). You will need an old laptop with a serial port to make this work, and you will have to get BMW's INPA software installed and running to take full advantage.

As to the actual problem that you are having... It could be a lot of things. I recently experienced this same symptom with my E46 (2003 3 series) and my problem was spark plugs and probably coils. You need to go through the diagnostic process through, or you will just be throwing parts at the car.

1) Read codes if you can, BMW INPA with an ADS interface is best. There are some ways to get codes using a PEAKE tool (fcx-3), but they are no longer made and are not as good as INPA on a laptop. I think a lot of people are using mobile apps these days with bluetooth adapters but I dont think that is going to work in ADS.

2) Check fuel. There is a schrader valve on the fuel rail (under the engine covers). They make pressure gauges that are meant for fuel. You can sort of test it by turning the key to position 2 (Accessory = 1, On = 2, Start = 3). This should "prime" the fuel pump and provide fuel pressure at the rail. Get a rag and a small screwdriver. Put the rag around the screwdriver and press the center pin on the schrader valve. Fuel should "squirt" out. If you can do this repeatedly, fuel is probably good.

3) Check spark. With the engine cold, remove a coil and spark plug. Remove the fuel pump fuse (Fuse 18?). Ground the spark plug body (the metal part, looks kinda like this). reconnect the coil and connect the plug and coil (outside the engine, with the spark plug grounded). Try to start the engine. You should be able to see/hear the spark jumping the gap in the spark plug if there is good spark.

4) Check air. Check your air filter and passageways to make sure there is no blockage (unlikely).

5) Check compression. It is very unlikely that the car simply "lost" compression, but it is a necessary ingredient of making the engine go.

Hope that helps and good luck.
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Old 06-18-2019, 08:24 AM   #9
Andresmam
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wow Thanks man! I will try everything @mynameisbmw
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Old 07-02-2019, 07:51 AM   #10
Eirik24
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Originally Posted by Andresmam View Post
wow Thanks man! I will try everything @mynameisbmw
I had a similar problem and it was spark plug ... _sl_

Last edited by Eirik24; 07-03-2019 at 02:40 AM.
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Old 07-02-2019, 09:44 AM   #11
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I think OP meant to type e36fanatics.com and his typo brought him here?
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