Question about 1984 Honda Civic

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86 crx hf maybe carb

Have a crx hf(high fuel) (NP) no power. Which I guess is normal with these high geared jessies. Was coming home today on a hill and it started acting like it was missing under load. Like running on 3 cyl. Slowed down to get up hill and when I crested it it started running fine. Am getting about 35 to 38 mpg so dont want to mess with tooo much.Doesnt overheat,changed plugs wires cap rotor, is actually 2nd time its done this but was about 3 mos ago the 1st. time.Was wondering if it could be just fuel filter or something similiar. Just wondering thanx Steve

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Yes, change fuel filters (yes both) one by the left rear tire (often neglected) and the one by the carb.
also take off and reseat plug wires on cap and on plugs; (they get loose) you might also want to check plugs. I had a loose plug on my 84 accord and had to tighten by hand until I could get it home.. it vibrated loose.

Posted on Apr 23, 2009


Answering ****. Found that the timing was off. Dont know how . But when I went to turn motor over by hand it acted like it was hitting on a valve.I set it and reset 3 times to make sure it was right. Got that done and still sounded like it was blowing by somewhere. Took the intake back off and found that the gasket was wrong. It bolted up right but was covering some ports and not even close to others.Put it back together and it is running but now acts like it may have a dead cylinder Am hoping it didnt punch a hole in piston or bent a valve. Am burnt out on this for now. all weekender Am going to do a compression check when I get back to it. Thanks for the info .Steve in cali

Posted on Jun 16, 2008

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Turns out that itwas 2 bad plugs. Quite alot of oil on both. Checked compression and was in range for 216000 mi. Changed out plugs and it seems to be back were it was. Running ok but now am assuming that the valve seals must be going in the 2 cyl. Not smoking so also assume that the rings are ok. Steve C

Posted on Jun 09, 2008

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1988 Samurai. Why does the engine die going up hill?

for lots of reasons. how steep a hill, offroad.
50% grade , 99%?
is yours Carb or EFI? 1990 first EFI.
is it still stock, original engine? many are not.
many with carbs, no longer have stock carb. but have weber. as ungrade many do..
just asking for wild guessing, ?
ok, spark plugs are too old.
engine cam belt slipped?

some are upgrade to EFI G13 or G16A or B engines.

the stock carb will be bad,, a hopeless case if ever there was... (no kits sold nor parts.)

but lets to the carb hit list.
1: choke stuck on , foods and stalls.
2: float, level all wrong, (will cause too lean or rich , rich is too high) or stuck high.
3: jets all dirty causing horrid lean state.d
4: emulsion tubes (air) clogged.
5: low fuel pressure, or too much if using a usa fuel pump with insane 15psi pressure that carb will fail. or the downgrade to electric pump done wrong. ask me if true.
5: air leaks below the carb cause lean and lack of power,
6: clogged air cleaner or fuel filter.

this is not a guess,
but each takes inspections and testing. fo find it.

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My Ford Transit Diesel 2007 (camper van)intermitantly loses power and the Engine Malfunction light comes on. If I stop, turn off the engine and restart it a few minutes later everything goes like a ch

When the engine is under load it uses more fuel then normal .First replace the fuel filter then check the fuel pressure and flow. the pressure and flow are checked with gauges. For a rough check remove the return pipe from the fuel rail, if fuel is flowing there the fuel system should be ok providing the pressure valve is not stuck open. if there is no flow there the pump may be at fault.

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1 Answer

Lean fuel mixture

which engine? lots of engines on 86, lots swapped too.
to work on any car engine wise this is first, ID the engine.
then the Fuel system. carb or EFI.?

lean fuel mix can be caused by.
well gee what engine, and is it EFI, nah , not in 86 its a carb.
if a carb you really need to say so as many a mech never seen one.
today. gone now for 27 years. 87 to present.

i cut teeth on carbs. in 60s
a love/ hate thing,,, today i have fancy tools, that mean them easy.
my comments are USA only , as export jeeps are vastly diffr.
I had a 88 (2 of them same time) then a 99, then a 2002 then 2008
1/2 million miles on them or more.

vacuum lines are easy, replace em or inspect test them.
if they look cracked they are roll them between fingers.
or use a hand vacuum tool attached and do a leak down test on all .
or pinch them running to see if RPM changes radically.

ill answer for CARBS (in order of likely)
  1. dirty carb. (inside)
  2. jets clogged or partially.
  3. flow level set too low.
  4. float valve sticking closed. gummy. see #1
  5. fuel pressure low. to CARB. the FSM has spec, here .
  6. lean under heavy load is power jet stuck closed , see #1
  7. lean only for an instant, fast right foot, means the accelerator pump is dead, fix it . clean carb and kit it. and it need to be adjusted per the manual. FSM.
  8. sure any air leaks below the carb cause lean... lots of ways.

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Check you're catalytic converter, Dont know how fast 40-60 KPH is but if it is near 40 miles per hour and has no power up hill that would be the first thing I would check. second would be Fuel pump... Hope this helps

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I have an 84 honda crx. I changed the head and swaped it with an 86 civic because the timing belt broke and bent some of the valves. The car now idles great but when i drive it putting it under a load......

Sounds like timing to me. Rent a timing light - or just pay a friendly mechanic to check your timing. There is a special tool you can use to check your timing for top dead center.
Here is a home remedy. Mark the distributor and the engine for location. You can score them both with a standard flat head screw driver. Loosen the distributor. Have a helper start the car. With the helper pushing to the car to around 2500 - 3500 RPM turn the distributor a little each way to see if you notice a better power band. On older cars like yours be careful not to get a shock from lousy plug wires.If you go to turn the distributor and get a nasty but harmless shock - consider putting new plug wires on the car. You should notice a great increase in performance. You may need to adjust this the first time or two but it is a great way to tune the car when no timing light is around. Be sure to tighten the distributor bolts.
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