Question about 1991 Honda Prelude

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Spark plug gaping

What is the correct gaping for spark plugs on a 1991 Honda Prelude Si? How would i go about doing it?

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Is this the same gap as a 1990 prelude si

Posted on Feb 06, 2013

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Go to your nearest Autozone or other parts house and buy an inexpensive plug gapper. I gap the Honda plugs at .045 .

Posted on Jun 19, 2008

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86 prelude 2.o SI has no spatk and no PGM-FI light. how do I test the circut for that light


if you have changed the distributor cap,rotor button,spark plug wires and plugs and you still dont have fire then its most likely your distributor.first check the fuses or relays if you have replaced those items.

Dec 10, 2012 | 1986 Honda Prelude

1 Answer

Ive changed the spark plugs in my honda prelude and now the car wont start


does it even crank? put the old ones back and if it starts then you have the wrong spark plugs or they were not gapped correctly.

Aug 05, 2010 | 1991 Honda Prelude

1 Answer

How do you find tdc for a 1991 honda prelude 2.1


remove the #1 spark plug. rotate the engine in the direction it rotates when operating. use a socket and ratchet on the crankshaft bolt. while cranking, place your finger over the spark plug hole. when you feel pressure building. insert a wooden dowel into the hole and contact the piston. while holding the dowel against the piston, continue cranking while observing the dowel. when the piston reaches the top, the dowel will stop and begin reversing direction. when it starts reversing direction, stop and crank it back to the top. go slowly when performing all steps. obviously this procedure works best with 2 people.

the #1 plug should be the first one at the front of the engine. if you remove all plugs it will be easier to turn.

May 12, 2010 | 1991 Honda Prelude

1 Answer

Freeze plugs


usually the freeze plugs are located on the engine block underneith the heads.

Mar 18, 2010 | 1991 Honda Prelude

1 Answer

Spark plug torque for honda civic si?


Spark Plug Type NGK: PFR6F-11 DENSO: PKJ20CR-M11 Gap 1.0 - 1.1 mm (0.039 - 0.043 in) 1.3 mm (0.051 in) Torque 18 Nm (13 lb ft)

Mar 06, 2010 | 2002 Honda Civic

2 Answers

1991 honda prelude speedometer not working,what is


Probably the Vehicle Speed Sensor (VSS). Cheap and easy to change (see ebay), once found! Probably on top of gearbox, to rear.

Aug 06, 2009 | 1991 Honda Prelude

2 Answers

Honda prelude si 1991


Hi you are going to need an idle air control motor. This motor/sensor is what holds your idle at the correct rpm at idle.

Mar 27, 2009 | 1991 Honda Prelude

1 Answer

1993 honda prelude si 2.3 liters cuts off while driving


Smoking out the tailpipe is usually caused by worn rings, or really worn valve guide seals. (if it is an oil smoke) If it is a black smoke, it is running too rich, maybe an injector leaking or stuck open.

Mar 07, 2009 | 1993 Honda Prelude

3 Answers

Leaking sunroof


Had same problem with 91 Prelude, after rain, water would leak from moonroof, especially when stopping, having a wet neck on the way to work is not fun! Solution was to remove the small screens and restrictor caps on the drain hoses. The hoses can be acessed through the trunk behind the quarter panel cover on either side, just have a can ready for the skanky water to drain once the plugs are removed. When all clear, the drains should drain out right behind the mud flaps in the rear on each side. There are fron drains as well, these run behind the driver and passanger kick panels and drain around the mud flaps in the front.

Jul 24, 2008 | 1991 Honda Prelude

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