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Engine stumballs when under a load - 1985 Ford Bronco II

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I have a 1997 jeep cherokee.when the engine is put under load the distributor retards it self,what would cause this


It is a characteristic of modern engine timing to advance the spark as far as it is possible without detonation while the engine is under light load but as the load rises the cylinder pressure rises and the chance of detonation increases and so the spark is increasingly retarded until the basic setting is reached.

This is achieved either by computer programme or by distributor mounted vacuum unit(s).

Worn drive chains or belts are not load dependent...

Jun 09, 2017 | Jeep Cars & Trucks

1 Answer

I have a 2007 Hyundai i30 petrol 1.6 comfort. It starts very easily as soon as the engine comes under a load when accelerating hard the engine cuts out as if the ignition is switched off.


Check the fuel pressure under a load first, if it is ok then try unplugging the Mass airflow sensor (MAF), if the engine runs ok (check engine light will come on) then the MAF is most likely defective.

Nov 28, 2016 | Hyundai i30 Cars & Trucks

1 Answer

Leaky muffler type sound from engine when under a load


check for a leaking manifold gasket or cracked manifold. If it is a front wheel drive car there may be a flexible bit near the engine to allow the engine to move in the mounts . This bit of flexible exhaust is known to crack under the brading.

Nov 16, 2014 | 1998 GMC Sierra

1 Answer

Twin turbo 80 horse power deutz Diesel engine blows black smoke under load


Diesel engines smoke when under a heavy load. Unlike a gas engines, a diesel engine uses fuel that is more like an oil.Smoking is a good indication the fuel is not completly burning because of loaded engine spee. White smoke indicates the fuel is not ignitingefficiently. Truck, boats, tanks abd anything else using diesel fuel will smoke when it gets more fuel than it can use.. Easing up on the throttle will lessen the smoke but not eliminate.. Of coarse if the demand is lessened by applying less loadyhe fuel consumption drops.Not to worry as long as the smoke doesn't attract the EPA.

Sep 15, 2014 | Cars & Trucks

1 Answer

2000 Ford mustang. engine skipping and check engine light flashing. I have checked plugs and wires and they seem fine.


It sounds like you have a misfire. Does it miss more under a load or does it miss primarily,at idle. If under load, it is likely ignition related. Spray water on the wires and coils with the engine running. If they are carbon tracking it will be very obvious as the engine will miss worse.

Jun 25, 2014 | Cars & Trucks

1 Answer

06 5.4l misfire under load , loss of power


bad coil have some one w/ areal scanner ck. ur codes pid53 ull find it

Jun 06, 2012 | Ford F150 Cars & Trucks

1 Answer

How do you time a 1993 subaru impreza?


which series engine,all the 'ej' series dont have a distributor like the earlier engines,that you could set timing.Timing in the newer range are set by cambelt,computer and cam/crank sensors,and the knock sensor alters timing under load.I would need some more detail to why you want to time it?Is it idling poorly,or is it laboring or knocking under load?This model had a common fault with the knock sensor failing,which basically didnt allow the timing to vary enough when the engine was under load or accelerating.Hope this helps or supply some more detail and I can endeavour to help you.

Mar 22, 2011 | Subaru Impreza Cars & Trucks

2 Answers

1999 Dodge Ram 5.9L 4X4 not enough fuel


check the fuel filter and the EGR valve

May 07, 2009 | 1999 Dodge Ram

1 Answer

Engine will not go over 4000 rpms when under a load


Check the fuel pressue.

Check the mass air flow meter.

Apr 01, 2009 | 1999 Hyundai Accent

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