Not too sure what else to do, any ideas?


Asked by Jul 02, 2016 at 04:53 PM about the 1988 Ford Bronco II

Question type: Maintenance & Repair

It won't start we've adjusted the timing and think
we have it timed. There is no compression is one
cylinder, and barely any in another. Finally got it to
start last night but only for a few seconds, seems
like it was getting flooded with fuel.

7 Answers


Pull the vacuum line off of the fuel pressure regulator and then just turn the key on, if fuel sprays out of the regulator where the vacuum fitting is then the regulator is shot, of course you must have compressin to run, so you could be just chasing your tail until the compression is back up to par.


We've done that as well, no fuel sprays out from there but that vacuum line sits on the intake very loose, it's worn out. I would think that the motor could still start with bad compression, its only on 2 cylinders, wouldn't it just run like crap?


Frankly I'm surprised it even started with just two cylinders, your going to have to,at least pull the head to find out how much damage is in there, could be a cracked cylinder head.


Sorry I mistyped so cylinders 4 and 6 are the ones with very low compression #4-15 #6-30 but I had thought that the main things needed for a motor to run was fuel/vacuum and timing?


You need compression, without it wheres the bang, all you get it is poof, and theres no power in a poof.


Oh well that does make sense. Poof isn't really enough to start a motor.


If cylinders 4 & 6 are next to each other, you have a head gasket that's blown between the two cylinders. That's why you have no compression on only those two cylinders. Is the compression good on all the other cylinders? If so, it should still run. It'll run poorly though. HTH. -Jim

Your Answer

Bronco II

Looking for a Used Bronco II in your area?

CarGurus has 20 nationwide Bronco II listings and the tools to find you a great deal.


Ford Bronco II Experts

  • #1
  • #2
    Andrew Olsen
  • #3
    Colin Rivet
View All

Related Models For Sale

Used Ford Bronco
201 listings
Used Ford F-150
3,206 Great Deals out of 226,379 listings starting at $1,250
Used Jeep Wrangler
450 Great Deals out of 20,129 listings starting at $2,500
Used Ford Ranger
155 Great Deals out of 5,274 listings starting at $999
Used Ford Mustang
457 Great Deals out of 42,833 listings starting at $1,488
Used Chevrolet Blazer
907 listings starting at $950
Used Toyota 4Runner
303 Great Deals out of 27,641 listings starting at $1,900
Used Ford F-250
419 listings starting at $2,900
Used GMC Sierra 1500
1,229 Great Deals out of 63,096 listings starting at $1,200
Used Chevrolet Corvette
180 Great Deals out of 16,275 listings starting at $3,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.