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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 08-04-2014, 08:33 PM   #1
Quincy
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My Ride: E46 2003 330Ci
330Ci Misfires?!

Recently bought an 03 330Ci, 102000 miles. A few weeks in, received SES. Ran diagnostics, read that all cylinders had misfires/ some due to low fuel. Visited a German car specialist, said he'll check for any vacuum leaks. I'm on a low budget, any thoughts?
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Old 08-04-2014, 08:35 PM   #2
jfoj
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First 2 links below in my signature.

Provide OBDII Freeze Frame and Fuel Trim info at warm idle and steady cruise.

Do not go replacing the MAF, O2 sensors or coils at this point, you will be wasting money.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 08-04-2014, 08:37 PM   #3
Quincy
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Should I pay him the labor fee for him to make sure there's no vacuum leaks?
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Old 08-04-2014, 08:41 PM   #4
jfoj
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Quote:
Originally Posted by Quincy View Post
Should I pay him the labor fee for him to make sure there's no vacuum leaks?
Not if you are capable of DIY.

If you spend the night reading my links at least a few times, you will know exactly what to expect.

Search YouTube for Scotty Smoke Test and have fun.

3 most common problems are CCV & hoses (lower CCV oil return line is a very common issue), lower intake boot, DISA and DISA O-ring.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 08-04-2014, 08:53 PM   #5
Quincy
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Thanks a lot!! One question, how certain are you that this could be the solution? I'm stuck on a busy schedule this week, and I only have this car for my commutes.
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Old 08-04-2014, 09:01 PM   #6
jfoj
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11 year old car. If it was mine, I would order a fuel pump and filter just because. Read the 2nd link in my signature, www.bmaparts.com and use discount code SPECE30. If you order from BMAParts now, standard shipping will have the pump to you within 2 days typically. Also make sure you get a handful of small standard worm drive hose clamp from the local parts store. Best price is the 10 pack bag from Home Depot plumbing department!

Is the fuel pump the problem, cannot be sure, but keep the fuel tank at least 1/2 tank until you replace the fuel pump.

The problem is if the fuel pump fails, it WILL leave you stranded and cost you PLENTY in either overnight shipping, rental car and/or labor for someone else to install it.

Then you need to get Freeze Frame and Fuel Trim info.

But I would then other both intake boots and a DISA O-ring and repair kit for the DISA from German Auto Solutions.

Then learn how to log with an OBDII smart phone App and buy an interface, $35 or less.

These car are 100% predictable on what they need and at this age, they need it all.

Keep in mind, BMW, The Ultimate Maintenance Machine!
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299

Last edited by jfoj; 08-04-2014 at 09:03 PM.
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Old 08-04-2014, 10:21 PM   #7
Quincy
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Thanks again. Do you know the rough estimate of the total costs? I need to know because I'm a college student and my budget is pretty tight as of now.
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Old 08-04-2014, 10:21 PM   #8
Quincy
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Im not sure of whether to settle for a quick temporary fix with the specialist, because he does offer a good price, or to do it myself.
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Old 08-05-2014, 05:03 AM   #9
jfoj
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Quote:
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Thanks again. Do you know the rough estimate of the total costs? I need to know because I'm a college student and my budget is pretty tight as of now.
DIY, will always be cheaper, even if you replace parts you may not need to.

You take is to a shop, something like a fuel pump replacement which you can likely do in under 1 hour for about $150 will cost you between $400-$500 depending on the shop.

Most shops charge close to or more than $100/hour labor. They will usually not let anything go out the door for less than 2 to 2.5 hours labor.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 08-05-2014, 05:05 AM   #10
jfoj
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Quote:
Originally Posted by Quincy View Post
Im not sure of whether to settle for a quick temporary fix with the specialist, because he does offer a good price, or to do it myself.
The "specialist" will not offer a good price. They may tell you a number up front, but you have to know when to tell them to stop. They will be replacing parts, O2 sensor, MAF, Spark Plugs, Injector Cleaning and more. Most of these parts will not be necessary.

Do not be surprised when they hand you a $1k bill at the end of this. It happens all the time.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 08-05-2014, 01:43 PM   #11
Quincy
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So I inspected everything, and all pf my spark plugs are burnt, and the smoke testwent through to the DISA unit, would I have to replace the whole unit?
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Old 08-05-2014, 02:17 PM   #12
jfoj
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Quote:
Originally Posted by Quincy View Post
So I inspected everything, and all pf my spark plugs are burnt, and the smoke testwent through to the DISA unit, would I have to replace the whole unit?
THe DISA has a large O-ring that is a real problem. You can try the electrical tape wrap to buy some time, but you can buy a replacement O-ring and scrape the oil silicon clear of the groove.

Also the DISA flap gets worn out as well.

These guys sell the parts and this is a good DIY of what you would be dealing with - http://germanautosolutions.com/diy_t...sa_kit_diy.php
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 08-05-2014, 02:22 PM   #13
Quincy
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I actually checked that out yesterday! So do you think id have to replace the whole unit? The whole unit is 300 I believe
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Old 08-05-2014, 02:29 PM   #14
jfoj
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If you read the GAS info or the 1st link in my signature, the main part that will fail in the DISA that will require the DISA to be replaced is the vacuum diaphragm.

IF the vacuum diaphragm is still good the DISA could still be used and just repaired with a flap kit.

At a minimum the DISA O-ring needs to be replaced.

My preference is for a replacement DISA if it is 8+ years old because the rubber diaphragm will not last forever, but if money is tight and the diaphragm is still holding vacuum, I understand the decision not to replace it.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 08-17-2014, 09:37 PM   #15
Quincy
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Thanks so much man! My DISA unit was total crap, so I replaced the unit and the spark plugs myself... Thanks agian!
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