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I have a cmax mk2 1600 deisel with a lumpy tickover when cold. my fuel consumption is not good either. can anyone help

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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chiquititas
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SOURCE: zetec engine problem

try adding half a litre of tranny fluid to your engine oil sometimes that will help clean them out and free them up

Posted on Jun 23, 2008

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SOURCE: van

Hi paulsage8

If the vehicle emits black heavy smoke, the fault will likely to be from the injector pump....

The economy problem is first attend to by replacing the fuel filter.....Once removed, before fitting a replacement, fill it to the top with clean diesel fuel and then screw it home....Bleed all remaining air and when starting the engine, bleed the individual injectors.....After completing also replace the air filter....

Regards Johngee10

Posted on Oct 18, 2008

  • 208 Answers

SOURCE: VTEC 1.8 135K. Starts OK

My experience has been when the car runs badly when cold and it runs well when it warms up, it is usually an O2 sensor. The sensor has a heater on it so that the computer gets a good signal when the engine is not up to temperature.

Posted on Nov 16, 2008

  • 34 Answers

SOURCE: my tickover is lumpy on my bmw 1.8i how do i fix

check to make sure the crank sensor is no knoed out of place or cracked. Could also be intake leak. Famous for that also

Posted on Jun 08, 2009

  • 12 Answers

SOURCE: my 2005 ford focus cmax looses power, kangeroos and lows black smoke out the exhaust... fuel consumption has dramatically reduced from 50mpg to around 38mpg... it cruises at 60-90mph fine,, but lower

i would check the air filter, spark plugs and wires..

Posted on Mar 11, 2013

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1 Answer

Lumpy engihe at tick over


try disconnecting the battery for a hour and reconnect it this will resest ur ecu unit and 9 times out of 10 fixes it hope it helps

Apr 05, 2014 | 2004 Peugeot 206

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Bad fuel economy and lumpy idling - possibly causes


<p><b><u><span>Excessive fuel consumption and 'lumpy' idling engine</span></u></b><br /> <p><b><span>Possible faults:-</span></b><br /> <p><b><u><br /></u></b><br /> <p><b><u><span>Coolant sensor </span></u></b><span><span> </span>- engine is signaled as being 'cold' all the time, not just at start up, causing ECU to set longer injection cycle </span><br /> <p><span><span>&oslash;<span> </span></span></span><span>Low coolant level can prevent sensor being able to detect coolant temperature</span><br /> <p><span><span>&oslash;<span> </span></span></span><span>Faulty 'open' thermostat allows coolant to circulate without regulation and perhaps prevents the engine from achieving normal running temperatures.</span><br /> <p><span> </span><br /> <p><b><u><span>FPR</span></u></b><span> - broken diaphragm allows fuel to enter the vacuum line and then into the inlet manifold. Additional source of fuel makes the fuel air mix richer causing a faster and lumpy idle.</span><br /> <p><span> </span><br /> <p><b><u><span>Vacuum leak </span></u></b><span>- 'high oxygen' signal from O2 sensor causes ECU to set longer injection cycle.</span><br /> <p><span> </span><br /> <p><b><u><span>O2 sensor</span></u></b><span> - 'high oxygen' sensor error causes ECU to set longer fuel injection cycle</span><br /> <p><span> </span><br /> <p><b><u><span>MAF</span></u></b><span> - 'over reads' in error the amount of air entering causing ECU to set longer fuel injection cycle </span><br /> <p><span> </span><br /> <p><b><u><span>IAT</span></u></b><span> - 'under reads' in error the temperature of incoming air causing ECU to set longer fuel injection cycle</span><br /> <p><span> </span><br />

on Jul 22, 2011 | Mercedes-Benz E-Class Cars & Trucks

1 Answer

Fuel consumption


what country>?
what year.
what jeep?
open glove box, extract operators guide, its in there.
if lost get one at jeep.

Dec 10, 2013 | Jeep Cars & Trucks

1 Answer

Exhaust smoking


Fuel pressure regulator diaphragm may be ruptured, or the vacuum source hose is blocked.

Jan 04, 2012 | Jaguar X-Type Cars & Trucks

1 Answer

Sometimes not always - puff of smoke when starting ( light colour) followed by lumpy tickover and noisey clacky sound from engine - all becomes ok when warm


I suspect smoke is just condensation in exhaust from suiting overnight. The other descriptions sound like it needs an oil change (noisy clacky) and lumpy starting sounds like dirty battery cables - clean them top and bottom. ??- When was last "healthy" tune up? Plugs, wires, all fluids & filters? I'd start there.

Mar 14, 2011 | 2007 Toyota RAV4

1 Answer

I have a F-250 2007 6.0 Deisel. I had to replace the sending unit in the tank to mark the fuel level. My diesel consumption is getting worse by the day. I'm one that changes oil every 5k miles and fuel...


The MAF sensor in the air intake has a Temperature sensor in it to automatically adjust injector timing. Try cleaning it with Electronics cleaner and see if the problem goes away.

With the aftermarket products if have heard mostly good things, but it comes down to setting the injector timing for the best results and that can be done with the stock parts. With the Diesel you get your mixture by setting when the fuel enters the chamber. There are parts like the ICP which is under the Y pipe at the bottom of the engine on Turbos that can affect fuel consumption. Some of the crank sensors can be adjusted to fix timing issues.

For the price of fuel take it to someone with the proper gauges if cleaning or replacing the MAF does not help you. You really need to know what is going on with measured readings. A sticking Injector can do you in even if the timing is okay.

I hope you find my solution practical and helpful.

Dec 08, 2010 | 2007 Ford F-250 Super Duty Lariat

1 Answer

I have 4A-FE Motor but if i run the air conditioning RPM counter down to 0.8 ???


the power drain with a/c is about 25% so you would expect a drop in revs at tickover,but the engine electronics will keep tickover to about 800 to 1000 depending on ambient/start temp. nothing to worry about.
if you had a 4ltr engine the drop would be next to nothing......but the fuel consumption.........

Jul 08, 2010 | 1996 Toyota Corolla

2 Answers

VTEC 1.8 135K. Starts OK but feels lumpy from cold - almost like its not firing on all four. Once it warms up a bit the tickover when stationary drops to virtually zero (sometimes stalls), once fully warm...


1. My suspicion is your electronic ignition
2. If your car is a bit old, there might be a leak through your valves
3. Distributor timing gear is damaged (replace)

Nov 06, 2008 | 1997 Honda Accord

2 Answers

Ford tick over problem


Hi there!

A few more things to check for you.-

A vacuum leak in any of the vacuum hoses will cause the ECU to make random guesses at what's going on.

Have you replaced plugs recently - or at all? This is probably the main cause - and certainly worth a try.

Fuel filter should be replaced at recommended intervals - about 3 years.

Clean your leads and HT gear really well with a degreasant. Any losses will be more noticable at tickover than high revs.

Lastly.........wear on cam lobes or timing belt.

Hope it's cheap for you!
Please spare a moment to rate as fixya! if any of this information proves useful. Thanks (I don't get paid for this)

Jun 18, 2008 | 1997 Ford Escort

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