1994 ford ranger 4.0 OHV

[SenorNoob]

...2: 135/130...

Yikes

 

[Felzart]

Yikes

Lol yea that there lies the issue

 

[Mechrick]

1: 185/190
2: 135/130
3: 170/180
4: 175/180
5: 180/210
6: 175/200

Those aren't horrible numbers. Certainly won't cause an entire bank to go dead.

Something else just popped into my head. Check the passenger catalytic converter, it may be clogged.

 

[Shran]

'94 will not have separate cats for each side of the engine... they will have two in line right off the Y pipe. So if the cat is the problem, you'd have problems everywhere.

I have to ask, what did your mechanic think was wrong with it? I guess I am not understanding why you took it somewhere and now you have it back with no answers?

 

[Felzart]

'94 will not have separate cats for each side of the engine... they will have two in line right off the Y pipe. So if the cat is the problem, you'd have problems everywhere.

I have to ask, what did your mechanic think was wrong with it? I guess I am not understanding why you took it somewhere and now you have it back with no answers?

So I took it to two mechanics. First one said they thi k it's the timing but couldn't tear apart my engine because "it's older than my mechanics" the second guy said that the passenger bank wasn't firing and couldn't figure out why. Just chalked it up to I need a new engine. Second guys actually did their tests and research though

 

[Mechrick]

'94 will not have separate cats

You are correct, my mistake.

My recommendation is take it to someone who is comfortable with electronics, or buy an led test light and check it yourself. If it were sitting in my bay, I would verify power to the passenger bank injectors, and if that were ok, verify ground pulse to all three passenger bank injectors. That's job one before I would look at anything else.

 

[Shran]

So I took it to two mechanics. First one said they thi k it's the timing but couldn't tear apart my engine because "it's older than my mechanics" the second guy said that the passenger bank wasn't firing and couldn't figure out why. Just chalked it up to I need a new engine. Second guys actually did their tests and research though

Hope you didn't pay them much, especially the first one.

So did they say that ALL three cylinders on the passenger side are dead (1, 2 & 3?) Your compression numbers indicate that #2 could be a problem, one low or dead cylinder on a V6 will probably cause a pretty rough idle. By "the bank isn't firing" do you mean the spark plugs are not firing on that side, or the injectors aren't firing, or what?

Losing half the cylinders (1, 2, AND 3) will result in an engine that barely runs or won't start at all.

If you've just got a misfire on #2 then it could be a lot of things. Bad plug, coil pack, plug wire, dead injector, your low compression issue compounding things... cracked head, blow head gasket, leaking valve(s), etc.

I guess I would highly advise you to find a competent mechanic who can tell you what's wrong. Us internet people have a hard time guessing based on 2nd hand information.