Question about 1987 Nissan Pathfinder

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While driving, engine starts losing power and exhaust smells like engine is flooding. Then it will clear up and stsrt running fine again. This is a sporadic problem and doesnt occur at any special temp or operating condition. It almost seems like a vacuum or electrical problem. Is it possible the ecs is acting up?

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Your catalytic convertor is plugged or partially plugged......

silvio

Posted on Jun 30, 2009

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What can be the cause of a 91 Toyota V6 pickup truck to be going down the road and it feels like its losing power and you have to hold the pedal to the floor then it will straight now for a little bit and...


There are several possibilities. I assume the service engine light is on, indicating the engine computer knows there is a problem. If so, get a readout of the code; this will help you narrow down the problem area.

One possibility is a blown fuel pressure regulator; this can cause hard starting and flooding. Often, when the engine is cold, you can smell raw gasoline in the exhaust. Fuel injector problems can do the same thing, and could possibly cause poor performance. The engine computer would flag mixture problems.

Another possibility is a carboned-up EGR valve or exhaust manifold.

In very humid or rainy weather, a failing oxygen sensor causes poor performance, but usually does not affect starting.

Also, in humid weather, especially if there is precipitation, a failing ignition coil will cause all of these symptoms. If you have had excessively worn spark plugs, the wide gaps can cause coil breakdown as well as poor starting. That will set up this failure mode. You may get misfire or other ignition codes from the engine computer.

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After hot engine wont start and smells like gas


Most likely causes are bad engine coolant temp sensor OR leaking fuel injectors. Bad engine coolant temp sensor will give computer false reading and computer provides wrong air fuel mixture. Leaking fuel injectors will load the engine with raw gas--just like flooding it. Try pushing the gas pedal to the floor and holding it there when cranking when hot. That forces the computer into "clear flood" mode and it shuts off the injectors. If it starts up with pedal down, that would be a sign of leaking injectors.

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1994 Isuzu trooper very hard to start. acts like it flooded but when it finely starts it runs great and will restart every time. once cold it ether won't start or is very hard to start and acts like its...


Have a test done on the glo-plug system as it appears that they have burnt out and are not pre-heating the cylinders or providing a source of ignition for the atomised fuel from the injectors

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Car not starting, oil in spark plugs. changed valve cover gasket and spark plug seals. still cant get the car to start. starter is turning engine turns over and getting spark. i can smell fuel coming from...


If you smell fuel in the exhaust the vehicle is flooding or there is no spark. If it is a carb engine, make sure that the choke is in and hold you foot flat on the pedal while trying to start, this will clear any flooding.

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Hi my bmw 316i 1600 with a e36 engine is only doing about 10 to the gall, any ideas, also notice a strong smell of petrol when first starting car and smells stays there for about 15 mins, and also notice...


run the fault codes
problems with running rich include:-
injectors not working properly
excessive fuel pressure
leaking injector seals
heated oxygen sensor failure ( they are located in the exhaust manifold /pipe before the cat converter and are used to read the exhaust gas composition and report to the ECM which adjusts the air/fuel mixture accordingly
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I have a 2000 buick Lesabre and was driving home from work, 30 miles later at a stop light the engine started losing power. Started like sputtering.... it cleared up and was fine another 6 miles and...


have the coils and control module tested, sounds like you lost a coil so it not firing on all cylinders, it puting gas into nexhaust thats the smell, have it checked asap so you dont damage converter, hope this helps.

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HI check your air filter make sure is clean, replace spark plugs if fault whit fuel ,if thats the case also replace your oil and filter

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OK, fast! Check the exhaust for rotten egg smell and pressure. Exhaust should stop immediately when engine is turn ed off

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Runs about thirty miles then acts like flooded or exhaust plugged


try checking your cadlist convert on your exhusted

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