Question about BMW 530

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Losing Compression I recently had the engine of my BMW 530i overhauled. The car does not idle smoothly and i am losing compression on cylinder #1 when the car idles. The compression was fine when we tested it after assembling the motor. The car runs fine as long as the revs are above 2000RPM

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Sounds like your clearnces are a little too tight, therefore when you are warming up the clearances are tightening,and the valve is staying slightly open

Posted on Feb 18, 2009

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What is fault code 5651 on inpa software


there is something wrong with cylinder power, and engine control unit have problem with smoothness regulation at idle, it might be spark plug, cylinder compression, cables , ignition coil... etc you should have some other fault codes witch are connected to this code, send all your codes pls

Jun 29, 2014 | 2007 BMW 3 Series 328i

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Very low compression in the #4,6 and 6 cylinder


Low compression is likely indicating excessive cylinder wear, and worn out piston rings. If the engine is using (losing) coolant, then check for a bad head gasket. If you could post type of engine, and other symptioms (oil usage, backfiring, etc..) I could help more precisely.

Aug 12, 2012 | Chevrolet Chevy Cars & Trucks

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Low compression on cylinder 1 bad skip if you idle it up the skip will go away and also it runs fine while driving


If there is low compression in one cylinder the fault wil be shown more at IDLING as the engine will not be smooth. So there will be reduced power and it might also skip.
In th long run you will have reduced power of the engine even as the engine will not show on higher RPM and thus the fuel useage will be more.
It will be good to check out and estimate to get the compression corrected to all cylinders.

Sep 03, 2011 | 2005 Chevrolet Colorado

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I have a 89 Buick Regal 2.8 and in March i changed the spark plugs and wires because the car was losing power and it worked fine since than. Now the car putts while in park and accellerating and when i get...


Sounds like you are losing a cylinder, due to the described shaking. look for spark on all, then do a compression test. These will tell you a lot!

Jul 29, 2011 | 1989 Buick Regal

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I get white smoke from exhaust and a smell off burning oil, not losing any oil pressure, its a bmw 320d , can any1 help


You should get the car into a shop and have a compression test done. For some reason your engine is burning oil and a compression test that will show leakdown can help pinpoint the problem. Hope this helps.

Sep 23, 2010 | 2002 BMW 3 Series

1 Answer

1998 toyota camry started jerking a bit and now


If your losing compression then I suggest doing a compression test and then following it up with a wet compression test to determine whether the problem is in the valves or pistons.
Wow one tune up in 122k miles jerking not really an ignition thing more like a fuel thing. If Compression test results are good then do a full tune up even replace coil packs or distributor ( which ever is applicable) and replace fuel filter.
These vehicles are not known for major engine problems (blown engines bad valves etc).
Big with transmission problems if its a 6 cylinder not the 4 cylinders.

Apr 28, 2010 | 1998 Toyota Camry

2 Answers

1990 318i engine no compression yet timing chain ok cam and lifters working pistons going up and down has spark 0 compression wont start


I suggest you bring the pistons to TDC, one at time on the comprssion stroke and do a "cylinder leakage test". Put compressed air into the spark plug hose and try to detect where the air is going. If you have the piston exactly at TDC, it will stay there when you put conpressed air in the hole, if it's off a little it will push the piston down. If you have the valve cover off you can watch the valves to determine if you have the pistons on the compression stroke. You should be able to buy a fitting from an auto parts store that will thread into the spark plug hole. If not take an old spark plug and bust the guts out of it and weld a pipe fitting to it to adapt your air compressor hose.

Mar 07, 2010 | 1996 BMW 318

1 Answer

Engine lopes while idling code 300 runs good driving


Hi there,

If your DTC code is correct, P0300 means: Random/Multiple Cylinder Misfire Detected.

As you have not indicated any codes from 301 - 306, then the computer has not been able to identify which cylinder misfired.

Therefore, you will need to begin checking for possibilities which could trigger the random (or multiple) misfire, which can be anything from:

- air leaks (this can disrupt readings on the engine's computer). Try spaying liquid around the inlet manifolds, check hoses etc for leaks.
- Bad coil (assuming engine has a coilpack)
- Bad or poor spark plugs
- Bad or poor condition HT leads (going to the spark plugs)
- Bad cylinder compression (compression test will confirm this)
- Leaking head gasket (this can also cause bad cylinder compression) - are you losing coolant from your cooling system?

These are just some possibilities...

Cheers,

Scott

Nov 12, 2009 | 2000 Nissan Altima

2 Answers

My 1993 buick lesabre limited is losing power under load.Fuel pump tests good, have had MAF cleaned and changed coil, wires and plugs but still having problem. Had the cam and crankshaft sensors replaced...


May be your engine needs overhauling with new rings etc. It is a 16 year old car after all. Does it leave black soot if you accelerate when loaded? Or put a finger in the silencer (when it is cold) and see of it turns out black with oily soot.

Oct 11, 2009 | 1993 Buick LeSabre

1 Answer

Random misfire


sounds like the coil pack is the primary suspect here ..especially if your miss is migrating to cylinder#2 now....other issue possible...do a compression test...head gasket failure losing compression between #1 and #2 ....also..and specifically for *other user* comment... check function of EGR valve for vacuum leak into intake causing stumble misfire shudder and engine dying issues

Oct 16, 2008 | 1995 Ford Windstar

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