Jet valve? 88 b22 5 spd 4 cyl

[FaselZ71]

How many miles are on your truck? It may be a tired motor. Let me research alittle bit and I'll get back to you soon what size motor do you have?

[devon whitford]

well its got 190 on the odometer but the guy i bought it from rebuilt the engine about 2500 ago. new carb and clutch, paintjob. but this jet valve is beyond me ive never dealt with anything like it. its an inline four with a single overhead cam 8 valve. I dont know of hand what the engine size is but its the base model b2200 single cab 5 speed 2wd, its an 88. chiltons tells me theres an ajustement screw for these jet valves on the rocker arms themselves, even shows a picture of the screws in the book, but they literally arent there.

[FaselZ71]

Ummm.... That's strange I never trusted chiltons I always use haynes. But I'm gonna venture a guess and say that the 2200 means it's got a 2.2L motor. So if it was rebuilt 2500 ago then everything should be tight man I wish I could help you out more but man I don't know mazdas from a hole in the ground. Umm about the only thing I can honestly say it just try to get ahold of like junior or someone! I really hate to admit it but do you know any mechanics personally someone who could just have a listen or even take a quick look for free. I feel really bad because I told you this place would help and I see myself now that help is just not coming this way! I'm not saying no one else is gonna post but it's just taking awhile! I'll look around and see what I can dig up about your truck and post back within the next day for sure! Good luck and talk to you soon!

[mudseeker]

Originally Posted by devon whitford

so im new to mazda trucks and i need some help. I had a tapping noise coming from one my valves so i took the valve cover off and one of my rocker arms seems to be loose..or even missing something in between the rocker arm and the valve spring...a jet valve??? i bought the chiltons and it told me that theres a jet valve adjustement screw on the rocker arm itself but there is no adjustment screw.do i need a whole replacement rocker arm assembly or can i replace fix this so called jet valve. also does someone know what my cylinder compression should be im ranging from 90 to 120...which seems low and truck has not much power. one guy told me 120 another told me the older models like mine are actually high compression and should be around 150

don't know anything about mazda, but i think i know what you're talking about. i tear apart a lot of small 1 cylinder hondas and they have this little cap that fits over the valve stem. i'll see if i can confirm that this is the part you are looking for.

got this off autozone:
http://www.autozone.com/shopping/rep...00c15280076b03
http://www.autozone.com/R,1107364/ve...ductDetail.htm

[FaselZ71]

There ya go devon now we're getting somewhere. I'm trying to get another guy to post but he thought that this post was ancient!

[butlerglc]

Mine is doing the same thing.One valve rocker on #4 piston exhaust side have excessive slop. I slide a nickle under it and noise went away. I gues I need a new rocker arm. I looked on partsamerica.com and they are about $50 each. I just want to make sure that is the problem be fore I buy. I tryed replying to your problem on saturday but I finally got approval to be member .I'll keep you posted on my progress. Thanks, Gary

[butlerglc]

Here's another site.
AutoZone.com | Vehicle Selection - Year .I don't think ours have Hydraulic lifters. Mine is overhead cam so I don't think there are any lifters.

[butlerglc]

I'm going to wrecking yard today to see if I can find a good used rocker arm. Wish me luck. I'll keep you posted on my progress, Gary

[butlerglc]

Ok went to wrecking yard and did good. I found out that the hydraulic lifters are in the rocker arm where they contact the valve stem. I found one for the same cylinder as mine and the rocker lifter was in good shape. I'll let you know how it goes after i install.

[butlerglc]

I installed the rocker and all is quiet. Saved myself $50! The old one looked like the lifter was fully collapsed . How it going on your end?