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Misfire on front plugs and carb 100mis ago. Spark at both plugs,have switched HT leads round and plugs but still has misfire.

Has new Dynatek electronic ignition and has ran well for 100mls or so but has stood for a few months but battery has being kept fully charged . New 1200 conversion about 500mls ago

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Could be out of time or a sticky valve -- or could have a cracked coil

Posted on Apr 03, 2015


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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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I'm trying to find out how do I find out what is the repair code po304

The computer is detecting a misfire on #4 cylinder.You may need a spark plug or coil or spark plug wire etc on that cylinder.

Mar 26, 2018 | Cars & Trucks

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05 kia Sorrento #5 misfired already replace spark plug coil & injector same code still comes up #5 misfired can someone help me with this problem

you replaced the plug and injector but there is no mention of the HT lead or distributor cap being replaced or checked
It is possible that there is a crack or carbon track inside the cap which is also misfire for that cylinder. HT leads are carbon filled tracks with a wire insert at each end and if that wire fails to make contact with the carbon ( incorrect method of pulling from plug or cap) then the resistance in that lead makes the spark late which results in a misfire report.

Jul 26, 2015 | Kia Cars & Trucks

2 Answers

When i had the check engine light checked,misfire #3 cylinder have changed coil no change still misfire changed fuel injector,and spark plugs,no change now i am lost please help.

Try the HT lead on that cylinder by starting car in the dark and look out for spark coming out of that lead while running. Or get a spare lead and replace on that cylinder.hope this helps

Jul 08, 2015 | 2005 Nissan Altima

1 Answer

Po302 p1358

have a compression test done to determine if valve or other chamber problem. change coil to another cylinder if individual coils to see if misfire moves . Change injector to another cylinder to see if misfire moves . IF it has HT leads then replace that lead with a new one and /or change that plug only too see if it is a plug problem. Check inside distributor cap for crack at that plug lead point.

Jun 28, 2014 | 2007 Audi A3

1 Answer

Code p0300 came up on my 97 olds aurora what does it mean and how do I fix it?

code p0300 refers to random/multiple cylinder/s--misfire detected===causes--spark plug/s--HT lead/s---injector/s--ignition coil/s---low compression---wiring. Most of your mates will tell you to replace the plugs and leads and that may fix it but injectors are a major fault in misfires. So have a pressure test done on the fuel manifold first and check the fuel pump/pressure regulator/filter. If the pump is not producing fuel or the regulator is set too low then the injectors will not deliver the fuel at the correct amount at the right time (misfire- random cylinder). Plugs and leads will cause a constant misfire not every wherever cylinder.

Dec 07, 2013 | Cars & Trucks

1 Answer

P0300 engine code misfire

code p0300 refers to random/ multiple cylinder/s--misfire detected===causes--spark plugs--HT leads--injectors--ignition coils--low compression ---wiring As you have done the plugs and leads the obvious thing left is the injectors. They have a random misfire problem if the fuel pressure in the fuel manifold is too low. Have a pressure test done on the fuel system as it may be a faulty pressure regulator ---air venting problem in the tank or failing fuel pump

May 14, 2013 | 2002 Chevy Impala - 3.8L V6 - Electric...

2 Answers

Code 303 and 304 and check engine light plugs have not been changed 119.000 miles is it tune up time

P0303....Cylinder 3 Misfire Detected

P0304....Cylinder 4 Misfire Detected

sounds like a new set of HT leads and plugs wouldnt go amiss(fire wires) weird name that fire wires HT stands for high tension leads in proper english .

Mar 07, 2011 | Ford F-150 Cars & Trucks

1 Answer

2007 Volvo XC90 fault codes-ECM P030000, P030100, P030300, P0304000, what do they mean?

first code means random/multiple misfire cylinder (s) detected
second code means misfire detected number 1 cylinder, third code, miss=fire number 3 cylinder fourth code misfire number 4 cylinder
causes can be spark plugs, HT leads, ignition coils, injector, wiring fault, low compression/ engine mechanical fault

Jun 04, 2010 | 2007 Volvo XC90 V8 AWD Sport

2 Answers

1999 town car whats the number 3 misfire

a misfire on cylinder number 3. could be a dodgy spark plug, HT lead or coil pack/ distributor hope this helps

Dec 02, 2009 | 1999 Lincoln Town Car

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