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Vauxhall Merida starts cold but wont start when hot takes a lot of crank to start engine

Just starting up in cold is ok if foot is not gas otherwise cuts out also difficult to start when hot

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Hard to start when engine warm

crankshaft sensor may be going bad

Posted on Aug 09, 2008

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SOURCE: Hard starting hot or cold. Battery and starter are fine.

check fuel pump relay/should run pump for two sec when key is turned on. try turning key on but dont crank did pump hum/if it did look towards leaky fuel inj./faulty pressure reg. poss clogged fuel filt.

Posted on Nov 17, 2008

alicantecoli
  • 22246 Answers

SOURCE: 98 Escort Hard starting when hot

sounds like a dodgy mis reading of a sensor caused by electrical resistance which is turning choke on and flooding engine.know the fault but without car in front of me its difficult to diagnose,could be auto choke sensor which is on right hand side of cylinder head ,but not sure.best is probally dealer have you tried spark plug gaps ??25th although this would cause problems with cold starting not hot starting but its worth a look

Posted on Nov 28, 2008

  • 1 Answer

SOURCE: vw caddy van 2004 onwards hot starting problem

i have a 05 caddy van there is traces of oil in coolant tank.i just got new turbo fitted as my other blew.could this have happened when my turbo went?

Posted on Mar 21, 2010

  • 251 Answers

SOURCE: peugeot 307 1.4 2002 does not start when engine is

Engine is difficult to start when cold

  1. Check the battery condition, battery state of charge and starter motor current draw. Replace the battery if marginal and the starter motor if the current draw is beyond specification.
  2. Check the battery cable condition. Clean the battery terminals and replace corroded or damaged cables.
  3. Check the fuel system for proper operation. A fuel pump with insufficient fuel pressure or clogged injectors should be replaced.
  4. Check the engine's tune-up status. Note the tune-up specifications and check for items such as severely worn spark plugs; adjust or replace as needed. On vehicles with manually adjusted valve clearances, check for tight valves and adjust to specification.
  5. Check for a failed coolant temperature sensor, and replace if out of specification.
  6. heck the operation of the engine management systems for fuel and ignition; repair or replace failed components as necessary.
Engine is difficult to start when hot
  1. Check the air filter and air intake system. Replace the air filter if it is dirty or contaminated. Check the fresh air intake system for restrictions or blockage.
  2. Check for loose or deteriorated engine grounds and clean, tighten or replace as needed.
  3. Check for needed maintenance. Inspect tune-up and service related items such as spark plugs and engine oil condition, and check the operation of the engine fuel and ignition management system.

Posted on Jun 07, 2011

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1 Answer

Jeep will start and run then after you shut it off it will not start ?


NO start, but cranks ok ! (guessing i am on that cranking bit...)
no engine size stated, so cant be ACCURATE.
wont start hot. ok cold
so when hot it fails, and when hot that is when we try to fix it or diagnose it.. not cold.
so got spark on all unstated engine cylinders?
all must work not just one
ever get a full tuneup this decade or even ever?
when it dont start, did you read the oper guide.
and do the wide open throttle , cranking, and see IF the engine unfloods? (this is feature on all EFI cars).

all cars do this ignored, all do.
service it? ever?

if spark is good, try test fuel.
if test fuel works for 3seconds, or starts and runs hot, say so now?
if test fuel fails, check spark tips for soaking in fuel or bone dry.
if soaking, , its flooded,
if flooding it is, we work flooding
ask.how, (can be many reasons. more tests... )
like that....

i offer only one guess, on all cars, all cars ignored!!
eva get a tuneup?

Jul 03, 2014 | 1997 Jeep Grand Cherokee

1 Answer

Wont start when hot


crank sensor is one possible cause.

Sep 18, 2013 | Kia Optima Cars & Trucks

2 Answers

Car wont start on hot days!!!


once had the same problem the armature in the starter expands when hot and wont crank cools down and starter works

Jan 09, 2013 | 1990 Nissan Pulsar

1 Answer

Crank no start ,got fuel got spark, when trying to start spark plugs get wet ,changed plug pinched fuel line shut try srarting flud wont start???


You pinched the fuel line????
If you crank for too long to start the car, the engine will "flood", this is why the plug was wet. It had too much gas and wouldn't start.
Pull out ALL plugs and dry them off.
Install them.
HOLD your gas pedal to the floor and crank.
This will stop gas from entering the engine.
you need to get that extra gas out beofre it will start.
If you have so much gas in there you can do damage to your engine!!
Now after a few crnaking attempts with your foot to the floor, take your foot of the gas pedal and try to start it again.
But remember if it doesn't start in 3 tries, you need to do the pedal to the floor once or twice to remove the excess gas.
When you crank the car to start it sprays gas into the engine, even if it won't start. So it very easy to "flood" the engine, and then you'll have a hard time to get it going!

Jan 08, 2010 | 1997 Nissan Sentra

1 Answer

2006 Maxima starts ok when cold. Really hard to


Might be an oil issue. Oil when hot might be too thick for the pump to pump the oil easily in the engine. Check that and if not that come back.

Jul 15, 2009 | 2006 Nissan Maxima

1 Answer

TOWNCAR COLD AND HOT ENGINE PROBLEMS


mcdevito75 here, Sounds like something in the ignition system, a bad ignition module or coils, Have your repair shop take a look at these items.

Apr 10, 2009 | 1993 Lincoln Town Car

2 Answers

Hard to start when engine warm


crankshaft sensor may be going bad

Jun 26, 2008 | 2003 Ford F150 Regular Cab

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