Good PM mga sirs,
Hingi sana ko ng assistance, my ride is a 93 Civic LX, stock PH15 engine -( carb-type) ...
problem : sa initial start ng engine , rev goes as high as 2500+rpm after mga 30secs, it normalizes @ 1000rpm.

Restarts with warm engine OK naman at 1000rpm. Idling with aircon OKs naman.

San ko kaya pwede patingan....
salamat  

sir subukan niyo ho ilagay sa on ng mga 5-10 secs bago ninyo istart baka dahil di pa napprime ang fuel pump tas nagcocompenstate na ang ecu

sir blackblood,

afaik, walang ecu ang 93 lx, as what tolits mentioned, carb yung engine niya.

ang alam ko normal lang na mataas ang idling pag cold start.    but 2500 at cold start and 1000rpm is quite high. pababaan mo siguro yung idling mo. afaik, 700-800 ang normal engine idling.

wala bang auto choke yung ph15 carb?

Normal po yan... ganyan din yung lumang civic namin!  

medyo mataas lang yung rpm's pero ok lang siguro yan.

mga Sirs,
thanks for the info......
made some comparison on my friends LX carb timing.
then nagDIY adjustments ako sa oto ko, adjusted yung two(2) pins? and yung black circular dial ( located sa back ng carb).
came up with this RPM reading.....
Initial start -  1000rpm
pag medyo warm na ( with or without aircon) - 800rpm
yung Idle up pinalitan ko just to make sure na lang.

OK naba yung ganitong reading? mga sirs

Quote from: speedyfix on February 17, 2005, 09:12:35 AM
medyo mataas lang yung rpm's pero ok lang siguro yan.

paano kung medyo sinisinuk?

Quote from: jason/non-vtec on February 15, 2005, 07:22:12 PM
sir blackblood,

afaik, walang ecu ang 93 lx, as what tolits mentioned, carb yung engine niya.

ang alam ko normal lang na mataas ang idling pag cold start.    but 2500 at cold start and 1000rpm is quite high. pababaan mo siguro yung idling mo. afaik, 700-800 ang normal engine idling.

whoops di ko nakita sorry for the wrong info. sakto lang yun rpm na ganun

sir start nalang ho kayo iabng topic pang sinok. or check out ninyo yung sa well maintaned sticky about engine trouble shooting

cold start should be around 1500 rpm.

pag warm up na engine....magnormalize to 800rpm.

tama yung ginawa mo. adjust mo yung automatic choke mo.

I was about to ask the same question about high idling during cold start ng Civic LXi.  PH15 din engine ko pero yung sa akin it reaches 3000 to 4500 RPM during start... mga 1 minute siyang ganun pag malamig ang makina.  Kaya ang lakas kumain ng gas.

I try ko po yung ginawa ninyo... Sana magwork din sa akin.

Matagal na rin ako nagtitiis sa ganitong sitwasyon... salamat sa autoindustriya... may chance na na mag-fix yung problem ng auto ko.

> mga Sirs,
> thanks for the info......
> made some comparison on my friends LX carb timing.
> then nagDIY adjustments ako sa oto ko, adjusted yung two(2) pins? and yung black circular dial ( located sa back ng carb).
> came up with this RPM reading.....
> Initial start -  1000rpm
> pag medyo warm na ( with or without aircon) - 800rpm
> yung Idle up pinalitan ko just to make sure na lang.

> OK naba yung ganitong reading? mga sirs

yup ok na yan.

heto po ang idling ko. 900 po ba ito or 700? 800?

Quote from: diorel on August 31, 2009, 05:03:38 PM


heto po ang idling ko. 900 po ba ito or 700? 800?

Looks like 800.

i think that's just normal, i guess it's what they call it idle up.