Number 1 will always be the front cylinder on an inline engine.
No , it is not an interference engine
they are on both sides of the engine just under the spark plug wires.
A 1995 Chevy Van with a 454 engine will have a spark plug gap of .060 inches. A difference of .005 (give or take) should not affect the engine's starting capabilities, however.
The Spark Plug gap is the same for both the 2.5 and the 4.0 Engine in the 1995 Jeep Wrangler. According to the Chilton Manual the Gap is 0.035
the spark plugs are located on the front of the engine under the hood
Not to tight just snug
To change the spark plugs in a 1997 astro van do I have to change the spark plugs from the bottom of the engine/
Screwed into the engine. Follow the spark plug wires.
Would need engine size to answer this.
Need to know what engine you have.
According to one of Fords websites : The 5.8 liter / 351 cubic inch V8 engine in a 1995 Ford F-150 has the spark plugs gapped at ( .044 inch )
no sir.