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Anonymous Posted on Sep 20, 2010

All vacuum pipes are good, new spark plugs, ht leads, rota arm ect, still the engine is shaking

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Jason Johnson

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  • Mercedes-Benz Master 1,619 Answers
  • Posted on Sep 27, 2010
Jason Johnson
Mercedes-Benz Master
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Joined: Jun 15, 2009
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Suggest replacing motor mounts. Huge failure probablility at your age of MB.

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Related Questions:

0helpful
1answer

How can I identify spark plug coil failure without expensive diagnosis ?

Hi, try reving the engine in nutural, do this in dark garage, you might see a spark leaking from HT leads or distributor cap, Check each lead with a ohm meter, resistance should not exceed more than 8000ohm per foot of lead. If in dought replace as a set.
To check for a vacuum leak, Allow engine to idle, spray a small amount of engine start from a can, around inlet manifold, and any vacuum pipes etc. Any increase in revs would indercate a vacuum leak.
good luck
Geoff
0helpful
1answer

Shaking idle

CHECK FOR ANY SPARK PLUG NOT WORKING OR ANY SPARK HT LEAD OR ANY VACUUM PIPE IS BROKEN.
0helpful
1answer

Car wont start but kicks over

Since you do have A fully charged battery and also you do receive fuel smell after crank start and the car wont start,either you do have an Ignition fault means not giving the spark,advice remove the spark plugs and check whether are wet with fuel,see whether are black,if so change them and before start check by leaving an HT lead off a spark and use one of the old ones connected to the HT lead and earthed to the engine,ask somebody to start the engine checking for any spark comes out. If yes then put the HT lead back to the new spark on the engine and try. If ther is not any spark,then you have to go backwards from the HT leads to distributor,Rotor Arm,Electronic igniter,Coil if is fitted,Fuse and relay. Good Luck.
0helpful
1answer

My 1992 mitsubishi eclipse engine is shaking

firstly is it petrol or diesel? Petrol try looking for a shorting out HT (plug lead) or that you have the leads on in the right order could also be a duff spark plug or EMU problem, check the leads and plugs first and also any wires going to coil unit. If its diesel then its probably an injector fault.
0helpful
1answer

Poor idle

Hi
It sounds like an air fault, most likely the air mass sensor to the air box or it could be that there is a split i a vacuum pipe or air intake pipe check all round them to ensure no rips or tears on the underside of hard to see pipes.

the other thing it could be is poor spark as you said you can smell fuel one of the plugs or HT leads may be defective causing a lack of spark thus the smaell of fuel, sometimes the spark can still work but be very weak not igniting the fuel correctly, lastly some moisture may be getting in to where the spark plugs are or around the coils, HT leads etc, get some damp start and spray all over the electrics if you susoect this.

hope this helps
Regards
Dan

0helpful
1answer

Engine light on scanned p0300 po301 and another 1735 or 1755 or 1765 not sure but ignition coil ouput #1

P0300 indicates one of the following
Spark plugs,
Ht Leads,
Injectors.
ignition coil.
low compression
P0301 indicates one of the following on cylinder one
engine mechanical fault (low compression)
wiring.
ignition / fuel
injector.
ECT/MAF sensor.
ECM.

not that i need to tell you but you have a misfire on cylinder one, check the spark plug <> HT lead <> injector <> low compression, as the coil supplies a spark to all cylinders i would rule that out for now apart from a visual check,




0helpful
2answers

Engine missing when you step on it

check your distributor cap is in full working order befor trying anything Else
0helpful
1answer

2007 Ford Fusion shaking when stopped

Sounds like a missfire, check spark plugs and HT leads from coil, they suffer from water damage from the windscreen washer jets. If water found you will need new coil, plugs Ht leads and revised washer jets from ford.

Good luck Davelee
0helpful
1answer

No spark

Set your engine to TDC and see if your rotor arm is pointing to number 1 cylinder. If not, slowly move the dissy until the arm is pointing to No 1 cylinder. Lock the dissy and turn over the engine. The HT leads needs to be the correct order.
0helpful
1answer

Audi 2001 a4 1.8t

There are two things to check.
1. It is producing a spark.
2. It is getting petrol through.
To check whether is producing a spark.
Remove one spark plug from engine. Reconnect HT lead and hold it touching car chassis and turn the engine. Do no hold the Ht lead with bare hands while doing this as it carries thousand of volts and will give you nasty shock. Hold it with some insulted material .
When you turn the engine you see spark across the plug electrodes.
As for fuel, trace the fuel pipe coming into the carbureter and disconnect pipe and have someone turn engine .Petrol should gush out showing that the petrol pump is working.
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